From 6f75a0af55811fcfd584f4bf136cdc42db9cff5a Mon Sep 17 00:00:00 2001
From: chrislu <chris.lu@gmail.com>
Date: Sun, 10 Mar 2024 14:34:28 -0700
Subject: [PATCH] ask follower to follow

---
 weed/mq/broker/broker_grpc_pub.go             |   34 +-
 weed/mq/broker/broker_grpc_pub_follow.go      |   78 ++
 weed/mq/broker/broker_grpc_sub.go             |  194 ++-
 .../broker_topic_partition_read_write.go      |    3 +
 weed/mq/topic/local_partition.go              |   18 +-
 weed/mq/topic/local_topic.go                  |    1 +
 weed/pb/mq.proto                              |   39 +
 weed/pb/mq_pb/mq.pb.go                        | 1200 +++++++++++++----
 weed/pb/mq_pb/mq_grpc.pb.go                   |  103 ++
 weed/util/log_buffer/log_buffer.go            |    1 +
 weed/util/log_buffer/log_read.go              |    7 +-
 11 files changed, 1362 insertions(+), 316 deletions(-)
 create mode 100644 weed/mq/broker/broker_grpc_pub_follow.go

diff --git a/weed/mq/broker/broker_grpc_pub.go b/weed/mq/broker/broker_grpc_pub.go
index 17d01f620..8c46ea99d 100644
--- a/weed/mq/broker/broker_grpc_pub.go
+++ b/weed/mq/broker/broker_grpc_pub.go
@@ -5,6 +5,7 @@ import (
 	"fmt"
 	"github.com/seaweedfs/seaweedfs/weed/glog"
 	"github.com/seaweedfs/seaweedfs/weed/mq/topic"
+	"github.com/seaweedfs/seaweedfs/weed/pb"
 	"github.com/seaweedfs/seaweedfs/weed/pb/mq_pb"
 	"google.golang.org/grpc/peer"
 	"io"
@@ -59,6 +60,21 @@ func (b *MessageQueueBroker) PublishMessage(stream mq_pb.SeaweedMessaging_Publis
 			return stream.Send(response)
 		}
 		ackInterval = int(initMessage.AckInterval)
+		for _, follower := range initMessage.FollowerBrokers {
+			followErr := b.withBrokerClient(false, pb.ServerAddress(follower), func(client mq_pb.SeaweedMessagingClient) error {
+				_, err := client.PublishFollowMe(context.Background(), &mq_pb.PublishFollowMeRequest{
+					Topic:     initMessage.Topic,
+					Partition: initMessage.Partition,
+					BrokerSelf:    string(b.option.BrokerAddress()),
+				})
+				return err
+			})
+			if followErr != nil {
+				response.Error = fmt.Sprintf("follower %v failed: %v", follower, followErr)
+				glog.Errorf("follower %v failed: %v", follower, followErr)
+				return stream.Send(response)
+			}
+		}
 		stream.Send(response)
 	} else {
 		response.Error = fmt.Sprintf("missing init message")
@@ -86,21 +102,9 @@ func (b *MessageQueueBroker) PublishMessage(stream mq_pb.SeaweedMessaging_Publis
 		glog.V(0).Infof("topic %v partition %v published %d messges.", initMessage.Topic, initMessage.Partition, ackSequence)
 	}()
 	go func() {
-		for {
-			select {
-			case resp := <-respChan:
-				if resp != nil {
-					if err := stream.Send(resp); err != nil {
-						glog.Errorf("Error sending response %v: %v", resp, err)
-					}
-				} else {
-					return
-				}
-			case <-localTopicPartition.StopPublishersCh:
-				respChan <- &mq_pb.PublishMessageResponse{
-					AckSequence: ackSequence,
-					ShouldClose: true,
-				}
+		for resp := range respChan {
+			if err := stream.Send(resp); err != nil {
+				glog.Errorf("Error sending response %v: %v", resp, err)
 			}
 		}
 	}()
diff --git a/weed/mq/broker/broker_grpc_pub_follow.go b/weed/mq/broker/broker_grpc_pub_follow.go
new file mode 100644
index 000000000..e74d7025f
--- /dev/null
+++ b/weed/mq/broker/broker_grpc_pub_follow.go
@@ -0,0 +1,78 @@
+package broker
+
+import (
+	"context"
+	"fmt"
+	"github.com/seaweedfs/seaweedfs/weed/glog"
+	"github.com/seaweedfs/seaweedfs/weed/pb"
+	"github.com/seaweedfs/seaweedfs/weed/pb/mq_pb"
+	"io"
+	"math/rand"
+	"time"
+)
+
+func (b *MessageQueueBroker)  PublishFollowMe(c context.Context, request *mq_pb.PublishFollowMeRequest) (*mq_pb.PublishFollowMeResponse, error){
+	glog.V(0).Infof("PublishFollowMe %v", request)
+	go b.withBrokerClient(true, pb.ServerAddress(request.BrokerSelf), func(client mq_pb.SeaweedMessagingClient) error {
+		followerId := rand.Int31()
+		subscribeClient, err := client.FollowInMemoryMessages(context.Background(), &mq_pb.FollowInMemoryMessagesRequest{
+			Message: &mq_pb.FollowInMemoryMessagesRequest_Init{
+				Init: &mq_pb.FollowInMemoryMessagesRequest_InitMessage{
+					ConsumerGroup: string(b.option.BrokerAddress()),
+					ConsumerId:    fmt.Sprintf("followMe-%d", followerId),
+					FollowerId:    followerId,
+					Topic:         request.Topic,
+					PartitionOffset: &mq_pb.PartitionOffset{
+						Partition: request.Partition,
+						StartTsNs: 0,
+						StartType: mq_pb.PartitionOffsetStartType_EARLIEST_IN_MEMORY,
+					},
+				},
+			},
+		})
+		if err != nil {
+			glog.Errorf("FollowInMemoryMessages error: %v", err)
+			return err
+		}
+
+		b.doFollowInMemoryMessage(context.Background(), subscribeClient)
+
+		return nil
+	})
+	return &mq_pb.PublishFollowMeResponse{}, nil
+}
+
+func (b *MessageQueueBroker) doFollowInMemoryMessage(c context.Context, client mq_pb.SeaweedMessaging_FollowInMemoryMessagesClient) {
+	for {
+		resp, err := client.Recv()
+		if err != nil {
+			if err != io.EOF {
+				glog.V(0).Infof("doFollowInMemoryMessage error: %v", err)
+			}
+			return
+		}
+		if resp == nil {
+			glog.V(0).Infof("doFollowInMemoryMessage nil response")
+			return
+		}
+		if resp.Message != nil {
+			// process ctrl message or data message
+			switch m:= resp.Message.(type) {
+			case *mq_pb.FollowInMemoryMessagesResponse_Data:
+				// process data message
+				print("d")
+			case *mq_pb.FollowInMemoryMessagesResponse_Ctrl:
+				// process ctrl message
+				if m.Ctrl.FlushedSequence > 0 {
+					flushTime := time.Unix(0, m.Ctrl.FlushedSequence)
+					glog.V(0).Infof("doFollowInMemoryMessage flushTime: %v", flushTime)
+				}
+				if m.Ctrl.FollowerChangedToId != 0 {
+					// follower changed
+					glog.V(0).Infof("doFollowInMemoryMessage follower changed to %d", m.Ctrl.FollowerChangedToId)
+					return
+				}
+			}
+		}
+	}
+}
diff --git a/weed/mq/broker/broker_grpc_sub.go b/weed/mq/broker/broker_grpc_sub.go
index c6dde6f4e..3280be2c0 100644
--- a/weed/mq/broker/broker_grpc_sub.go
+++ b/weed/mq/broker/broker_grpc_sub.go
@@ -8,6 +8,7 @@ import (
 	"github.com/seaweedfs/seaweedfs/weed/pb/filer_pb"
 	"github.com/seaweedfs/seaweedfs/weed/pb/mq_pb"
 	"github.com/seaweedfs/seaweedfs/weed/util/log_buffer"
+	"sync/atomic"
 	"time"
 )
 
@@ -69,15 +70,7 @@ func (b *MessageQueueBroker) SubscribeMessage(req *mq_pb.SubscribeMessageRequest
 
 	var startPosition log_buffer.MessagePosition
 	if req.GetInit() != nil && req.GetInit().GetPartitionOffset() != nil {
-		offset := req.GetInit().GetPartitionOffset()
-		if offset.StartTsNs != 0 {
-			startPosition = log_buffer.NewMessagePosition(offset.StartTsNs, -2)
-		}
-		if offset.StartType == mq_pb.PartitionOffsetStartType_EARLIEST {
-			startPosition = log_buffer.NewMessagePosition(1, -3)
-		} else if offset.StartType == mq_pb.PartitionOffsetStartType_LATEST {
-			startPosition = log_buffer.NewMessagePosition(time.Now().UnixNano(), -4)
-		}
+		startPosition = getRequestPosition(req.GetInit().GetPartitionOffset())
 	}
 
 	return localTopicPartition.Subscribe(clientName, startPosition, func() bool {
@@ -85,10 +78,10 @@ func (b *MessageQueueBroker) SubscribeMessage(req *mq_pb.SubscribeMessageRequest
 			return false
 		}
 		sleepIntervalCount++
-		if sleepIntervalCount > 10 {
-			sleepIntervalCount = 10
+		if sleepIntervalCount > 32 {
+			sleepIntervalCount = 32
 		}
-		time.Sleep(time.Duration(sleepIntervalCount) * 337 * time.Millisecond)
+		time.Sleep(time.Duration(sleepIntervalCount) * 137 * time.Millisecond)
 
 		// Check if the client has disconnected by monitoring the context
 		select {
@@ -116,7 +109,7 @@ func (b *MessageQueueBroker) SubscribeMessage(req *mq_pb.SubscribeMessageRequest
 				TsNs:  logEntry.TsNs,
 			},
 		}}); err != nil {
-			glog.Errorf("Error sending setup response: %v", err)
+			glog.Errorf("Error sending data: %v", err)
 			return false, err
 		}
 
@@ -124,3 +117,178 @@ func (b *MessageQueueBroker) SubscribeMessage(req *mq_pb.SubscribeMessageRequest
 		return false, nil
 	})
 }
+
+func getRequestPosition(offset *mq_pb.PartitionOffset) (startPosition log_buffer.MessagePosition) {
+	if offset.StartTsNs != 0 {
+		startPosition = log_buffer.NewMessagePosition(offset.StartTsNs, -2)
+	}
+	if offset.StartType == mq_pb.PartitionOffsetStartType_EARLIEST {
+		startPosition = log_buffer.NewMessagePosition(1, -3)
+	} else if offset.StartType == mq_pb.PartitionOffsetStartType_LATEST {
+		startPosition = log_buffer.NewMessagePosition(time.Now().UnixNano(), -4)
+	}
+	return
+}
+
+func (b *MessageQueueBroker)  FollowInMemoryMessages(req *mq_pb.FollowInMemoryMessagesRequest, stream mq_pb.SeaweedMessaging_FollowInMemoryMessagesServer) (err error) {
+	ctx := stream.Context()
+	clientName := req.GetInit().ConsumerId
+
+	t := topic.FromPbTopic(req.GetInit().Topic)
+	partition := topic.FromPbPartition(req.GetInit().GetPartitionOffset().GetPartition())
+
+	glog.V(0).Infof("FollowInMemoryMessages %s on %v %v connected", clientName, t, partition)
+
+	waitIntervalCount := 0
+
+	var localTopicPartition *topic.LocalPartition
+	for localTopicPartition == nil {
+		localTopicPartition, err = b.GetOrGenLocalPartition(t, partition)
+		if err != nil {
+			glog.V(1).Infof("topic %v partition %v not setup", t, partition)
+		}
+		if localTopicPartition != nil {
+			break
+		}
+		waitIntervalCount++
+		if waitIntervalCount > 32 {
+			waitIntervalCount = 32
+		}
+		time.Sleep(time.Duration(waitIntervalCount) * 137 * time.Millisecond)
+		// Check if the client has disconnected by monitoring the context
+		select {
+		case <-ctx.Done():
+			err := ctx.Err()
+			if err == context.Canceled {
+				// Client disconnected
+				return nil
+			}
+			glog.V(0).Infof("FollowInMemoryMessages %s disconnected: %v", clientName, err)
+			return nil
+		default:
+			// Continue processing the request
+		}
+	}
+
+	// set the current follower id
+	followerId := req.GetInit().FollowerId
+	atomic.StoreInt32(&localTopicPartition.FollowerId, followerId)
+
+	glog.V(0).Infof("FollowInMemoryMessages %s connected on %v %v", clientName, t, partition)
+	isConnected := true
+	sleepIntervalCount := 0
+
+	var counter int64
+	defer func() {
+		isConnected = false
+		glog.V(0).Infof("FollowInMemoryMessages %s on %v %v disconnected, sent %d", clientName, t, partition, counter)
+	}()
+
+	var startPosition log_buffer.MessagePosition
+	if req.GetInit() != nil && req.GetInit().GetPartitionOffset() != nil {
+		startPosition = getRequestPosition(req.GetInit().GetPartitionOffset())
+	}
+
+	var prevFlushTsNs int64
+
+	_,_, err = localTopicPartition.LogBuffer.LoopProcessLogData(clientName, startPosition, 0, func() bool {
+		if !isConnected {
+			return false
+		}
+		sleepIntervalCount++
+		if sleepIntervalCount > 32 {
+			sleepIntervalCount = 32
+		}
+		time.Sleep(time.Duration(sleepIntervalCount) * 137 * time.Millisecond)
+
+		if localTopicPartition.LogBuffer.IsStopping() {
+			newFollowerId := atomic.LoadInt32(&localTopicPartition.FollowerId)
+			glog.V(0).Infof("FollowInMemoryMessages1 %s on %v %v follower id changed to %d", clientName, t, partition, newFollowerId)
+			stream.Send(&mq_pb.FollowInMemoryMessagesResponse{
+				Message: &mq_pb.FollowInMemoryMessagesResponse_Ctrl{
+					Ctrl: &mq_pb.FollowInMemoryMessagesResponse_CtrlMessage{
+						FollowerChangedToId: newFollowerId,
+					},
+				},
+			})
+			return false
+		}
+
+		// Check if the client has disconnected by monitoring the context
+		select {
+		case <-ctx.Done():
+			err := ctx.Err()
+			if err == context.Canceled {
+				// Client disconnected
+				return false
+			}
+			glog.V(0).Infof("Subscriber %s disconnected: %v", clientName, err)
+			return false
+		default:
+			// Continue processing the request
+		}
+
+		// send the last flushed sequence
+		flushTsNs := atomic.LoadInt64(&localTopicPartition.LogBuffer.LastFlushTsNs)
+		if flushTsNs != prevFlushTsNs {
+			prevFlushTsNs = flushTsNs
+			stream.Send(&mq_pb.FollowInMemoryMessagesResponse{
+				Message: &mq_pb.FollowInMemoryMessagesResponse_Ctrl{
+					Ctrl: &mq_pb.FollowInMemoryMessagesResponse_CtrlMessage{
+						FlushedSequence: flushTsNs,
+					},
+				},
+			})
+		}
+
+		return true
+	}, func(logEntry *filer_pb.LogEntry) (bool, error) {
+		// reset the sleep interval count
+		sleepIntervalCount = 0
+
+		// check the follower id
+		newFollowerId := atomic.LoadInt32(&localTopicPartition.FollowerId)
+		if newFollowerId != followerId {
+			glog.V(0).Infof("FollowInMemoryMessages2 %s on %v %v follower id %d changed to %d", clientName, t, partition, followerId, newFollowerId)
+			stream.Send(&mq_pb.FollowInMemoryMessagesResponse{
+				Message: &mq_pb.FollowInMemoryMessagesResponse_Ctrl{
+					Ctrl: &mq_pb.FollowInMemoryMessagesResponse_CtrlMessage{
+						FollowerChangedToId: newFollowerId,
+					},
+				},
+			})
+			return true, nil
+		}
+
+		// send the last flushed sequence
+		flushTsNs := atomic.LoadInt64(&localTopicPartition.LogBuffer.LastFlushTsNs)
+		if flushTsNs != prevFlushTsNs {
+			prevFlushTsNs = flushTsNs
+			stream.Send(&mq_pb.FollowInMemoryMessagesResponse{
+				Message: &mq_pb.FollowInMemoryMessagesResponse_Ctrl{
+					Ctrl: &mq_pb.FollowInMemoryMessagesResponse_CtrlMessage{
+						FlushedSequence: flushTsNs,
+					},
+				},
+			})
+		}
+
+		// send the log entry
+		if err := stream.Send(&mq_pb.FollowInMemoryMessagesResponse{
+			Message: &mq_pb.FollowInMemoryMessagesResponse_Data{
+			Data: &mq_pb.DataMessage{
+				Key:   logEntry.Key,
+				Value: logEntry.Data,
+				TsNs:  logEntry.TsNs,
+			},
+		}}); err != nil {
+			glog.Errorf("Error sending setup response: %v", err)
+			return false, err
+		}
+
+		counter++
+		return false, nil
+	})
+
+	return err
+}
diff --git a/weed/mq/broker/broker_topic_partition_read_write.go b/weed/mq/broker/broker_topic_partition_read_write.go
index 4ebb62000..a058d8da5 100644
--- a/weed/mq/broker/broker_topic_partition_read_write.go
+++ b/weed/mq/broker/broker_topic_partition_read_write.go
@@ -11,6 +11,7 @@ import (
 	"github.com/seaweedfs/seaweedfs/weed/util/log_buffer"
 	"google.golang.org/protobuf/proto"
 	"math"
+	"sync/atomic"
 	"time"
 )
 
@@ -38,6 +39,8 @@ func (b *MessageQueueBroker) genLogFlushFunc(t topic.Topic, partition *mq_pb.Par
 				break
 			}
 		}
+
+		atomic.StoreInt64(&logBuffer.LastFlushTsNs, stopTime.UnixNano())
 	}
 }
 
diff --git a/weed/mq/topic/local_partition.go b/weed/mq/topic/local_partition.go
index 0947d259b..062f3f4bd 100644
--- a/weed/mq/topic/local_partition.go
+++ b/weed/mq/topic/local_partition.go
@@ -6,6 +6,7 @@ import (
 	"github.com/seaweedfs/seaweedfs/weed/pb"
 	"github.com/seaweedfs/seaweedfs/weed/pb/mq_pb"
 	"github.com/seaweedfs/seaweedfs/weed/util/log_buffer"
+	"sync/atomic"
 	"time"
 )
 
@@ -15,10 +16,9 @@ type LocalPartition struct {
 	FollowerBrokers   []pb.ServerAddress
 	LogBuffer         *log_buffer.LogBuffer
 	ConsumerCount     int32
-	StopPublishersCh  chan struct{}
 	Publishers        *LocalPartitionPublishers
-	StopSubscribersCh chan struct{}
 	Subscribers       *LocalPartitionSubscribers
+	FollowerId        int32
 }
 
 var TIME_FORMAT = "2006-01-02-15-04-05"
@@ -58,6 +58,9 @@ func (p *LocalPartition) Subscribe(clientName string, startPosition log_buffer.M
 
 		startPosition = processedPosition
 		processedPosition, isDone, readInMemoryLogErr = p.LogBuffer.LoopProcessLogData(clientName, startPosition, 0, onNoMessageFn, eachMessageFn)
+		if isDone {
+			return nil
+		}
 		startPosition = processedPosition
 
 		if readInMemoryLogErr == log_buffer.ResumeFromDiskError {
@@ -67,9 +70,6 @@ func (p *LocalPartition) Subscribe(clientName string, startPosition log_buffer.M
 			glog.V(0).Infof("%s read %v in memory log: %v", clientName, p.Partition, readInMemoryLogErr)
 			return readInMemoryLogErr
 		}
-		if isDone {
-			return nil
-		}
 	}
 }
 
@@ -96,7 +96,6 @@ func FromPbBrokerPartitionAssignment(self pb.ServerAddress, partition Partition,
 
 func (p *LocalPartition) closePublishers() {
 	p.Publishers.SignalShutdown()
-	close(p.StopPublishersCh)
 }
 func (p *LocalPartition) closeSubscribers() {
 	p.Subscribers.SignalShutdown()
@@ -118,3 +117,10 @@ func (p *LocalPartition) MaybeShutdownLocalPartition() (hasShutdown bool) {
 	}
 	return
 }
+
+func (p *LocalPartition) Shutdown() {
+	p.closePublishers()
+	p.closeSubscribers()
+	p.LogBuffer.ShutdownLogBuffer()
+	atomic.StoreInt32(&p.FollowerId, 0)
+}
diff --git a/weed/mq/topic/local_topic.go b/weed/mq/topic/local_topic.go
index 7825d2168..8ab2a0db5 100644
--- a/weed/mq/topic/local_topic.go
+++ b/weed/mq/topic/local_topic.go
@@ -27,6 +27,7 @@ func (localTopic *LocalTopic) removePartition(partition Partition) bool {
 	for i, localPartition := range localTopic.Partitions {
 		if localPartition.Partition.Equals(partition) {
 			foundPartitionIndex = i
+			localPartition.Shutdown()
 			break
 		}
 	}
diff --git a/weed/pb/mq.proto b/weed/pb/mq.proto
index 4e9690537..369f82fb3 100644
--- a/weed/pb/mq.proto
+++ b/weed/pb/mq.proto
@@ -45,6 +45,11 @@ service SeaweedMessaging {
     }
     rpc SubscribeMessage (SubscribeMessageRequest) returns (stream SubscribeMessageResponse) {
     }
+    // The lead broker asks a follower broker to follow itself
+    rpc PublishFollowMe (PublishFollowMeRequest) returns (PublishFollowMeResponse) {
+    }
+    rpc FollowInMemoryMessages (FollowInMemoryMessagesRequest) returns (stream FollowInMemoryMessagesResponse) {
+    }
 }
 
 //////////////////////////////////////////////////
@@ -205,6 +210,14 @@ message PublishMessageResponse {
     string error = 2;
     bool should_close = 3;
 }
+message PublishFollowMeRequest {
+    Topic topic = 1;
+    Partition partition = 2;
+    string broker_self = 3;
+}
+message PublishFollowMeResponse {
+    string error = 1;
+}
 message SubscribeMessageRequest {
     message InitMessage {
         string consumer_group = 1;
@@ -233,6 +246,32 @@ message SubscribeMessageResponse {
         DataMessage data = 2;
     }
 }
+message FollowInMemoryMessagesRequest {
+    message InitMessage {
+        string consumer_group = 1;
+        string consumer_id = 2;
+        int32 follower_id = 3;
+        Topic topic = 4;
+        PartitionOffset partition_offset = 5;
+    }
+    message AckMessage {
+        int64 sequence = 1;
+    }
+    oneof message {
+        InitMessage init = 1;
+        AckMessage ack = 2;
+    }
+}
+message FollowInMemoryMessagesResponse {
+    message CtrlMessage {
+        int64 flushed_sequence = 1;
+        int32 follower_changed_to_id = 2;
+    }
+    oneof message {
+        CtrlMessage ctrl = 1;
+        DataMessage data = 2;
+    }
+}
 message ClosePublishersRequest {
     Topic topic = 1;
     int64 unix_time_ns = 2;
diff --git a/weed/pb/mq_pb/mq.pb.go b/weed/pb/mq_pb/mq.pb.go
index cf9056c0e..ed9f5c002 100644
--- a/weed/pb/mq_pb/mq.pb.go
+++ b/weed/pb/mq_pb/mq.pb.go
@@ -1564,6 +1564,116 @@ func (x *PublishMessageResponse) GetShouldClose() bool {
 	return false
 }
 
+type PublishFollowMeRequest struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Topic      *Topic     `protobuf:"bytes,1,opt,name=topic,proto3" json:"topic,omitempty"`
+	Partition  *Partition `protobuf:"bytes,2,opt,name=partition,proto3" json:"partition,omitempty"`
+	BrokerSelf string     `protobuf:"bytes,3,opt,name=broker_self,json=brokerSelf,proto3" json:"broker_self,omitempty"`
+}
+
+func (x *PublishFollowMeRequest) Reset() {
+	*x = PublishFollowMeRequest{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_mq_proto_msgTypes[26]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *PublishFollowMeRequest) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*PublishFollowMeRequest) ProtoMessage() {}
+
+func (x *PublishFollowMeRequest) ProtoReflect() protoreflect.Message {
+	mi := &file_mq_proto_msgTypes[26]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use PublishFollowMeRequest.ProtoReflect.Descriptor instead.
+func (*PublishFollowMeRequest) Descriptor() ([]byte, []int) {
+	return file_mq_proto_rawDescGZIP(), []int{26}
+}
+
+func (x *PublishFollowMeRequest) GetTopic() *Topic {
+	if x != nil {
+		return x.Topic
+	}
+	return nil
+}
+
+func (x *PublishFollowMeRequest) GetPartition() *Partition {
+	if x != nil {
+		return x.Partition
+	}
+	return nil
+}
+
+func (x *PublishFollowMeRequest) GetBrokerSelf() string {
+	if x != nil {
+		return x.BrokerSelf
+	}
+	return ""
+}
+
+type PublishFollowMeResponse struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Error string `protobuf:"bytes,1,opt,name=error,proto3" json:"error,omitempty"`
+}
+
+func (x *PublishFollowMeResponse) Reset() {
+	*x = PublishFollowMeResponse{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_mq_proto_msgTypes[27]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *PublishFollowMeResponse) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*PublishFollowMeResponse) ProtoMessage() {}
+
+func (x *PublishFollowMeResponse) ProtoReflect() protoreflect.Message {
+	mi := &file_mq_proto_msgTypes[27]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use PublishFollowMeResponse.ProtoReflect.Descriptor instead.
+func (*PublishFollowMeResponse) Descriptor() ([]byte, []int) {
+	return file_mq_proto_rawDescGZIP(), []int{27}
+}
+
+func (x *PublishFollowMeResponse) GetError() string {
+	if x != nil {
+		return x.Error
+	}
+	return ""
+}
+
 type SubscribeMessageRequest struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -1579,7 +1689,7 @@ type SubscribeMessageRequest struct {
 func (x *SubscribeMessageRequest) Reset() {
 	*x = SubscribeMessageRequest{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_mq_proto_msgTypes[26]
+		mi := &file_mq_proto_msgTypes[28]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -1592,7 +1702,7 @@ func (x *SubscribeMessageRequest) String() string {
 func (*SubscribeMessageRequest) ProtoMessage() {}
 
 func (x *SubscribeMessageRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_mq_proto_msgTypes[26]
+	mi := &file_mq_proto_msgTypes[28]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -1605,7 +1715,7 @@ func (x *SubscribeMessageRequest) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use SubscribeMessageRequest.ProtoReflect.Descriptor instead.
 func (*SubscribeMessageRequest) Descriptor() ([]byte, []int) {
-	return file_mq_proto_rawDescGZIP(), []int{26}
+	return file_mq_proto_rawDescGZIP(), []int{28}
 }
 
 func (m *SubscribeMessageRequest) GetMessage() isSubscribeMessageRequest_Message {
@@ -1660,7 +1770,7 @@ type SubscribeMessageResponse struct {
 func (x *SubscribeMessageResponse) Reset() {
 	*x = SubscribeMessageResponse{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_mq_proto_msgTypes[27]
+		mi := &file_mq_proto_msgTypes[29]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -1673,7 +1783,7 @@ func (x *SubscribeMessageResponse) String() string {
 func (*SubscribeMessageResponse) ProtoMessage() {}
 
 func (x *SubscribeMessageResponse) ProtoReflect() protoreflect.Message {
-	mi := &file_mq_proto_msgTypes[27]
+	mi := &file_mq_proto_msgTypes[29]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -1686,7 +1796,7 @@ func (x *SubscribeMessageResponse) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use SubscribeMessageResponse.ProtoReflect.Descriptor instead.
 func (*SubscribeMessageResponse) Descriptor() ([]byte, []int) {
-	return file_mq_proto_rawDescGZIP(), []int{27}
+	return file_mq_proto_rawDescGZIP(), []int{29}
 }
 
 func (m *SubscribeMessageResponse) GetMessage() isSubscribeMessageResponse_Message {
@@ -1726,6 +1836,168 @@ func (*SubscribeMessageResponse_Ctrl) isSubscribeMessageResponse_Message() {}
 
 func (*SubscribeMessageResponse_Data) isSubscribeMessageResponse_Message() {}
 
+type FollowInMemoryMessagesRequest struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	// Types that are assignable to Message:
+	//
+	//	*FollowInMemoryMessagesRequest_Init
+	//	*FollowInMemoryMessagesRequest_Ack
+	Message isFollowInMemoryMessagesRequest_Message `protobuf_oneof:"message"`
+}
+
+func (x *FollowInMemoryMessagesRequest) Reset() {
+	*x = FollowInMemoryMessagesRequest{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_mq_proto_msgTypes[30]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *FollowInMemoryMessagesRequest) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*FollowInMemoryMessagesRequest) ProtoMessage() {}
+
+func (x *FollowInMemoryMessagesRequest) ProtoReflect() protoreflect.Message {
+	mi := &file_mq_proto_msgTypes[30]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use FollowInMemoryMessagesRequest.ProtoReflect.Descriptor instead.
+func (*FollowInMemoryMessagesRequest) Descriptor() ([]byte, []int) {
+	return file_mq_proto_rawDescGZIP(), []int{30}
+}
+
+func (m *FollowInMemoryMessagesRequest) GetMessage() isFollowInMemoryMessagesRequest_Message {
+	if m != nil {
+		return m.Message
+	}
+	return nil
+}
+
+func (x *FollowInMemoryMessagesRequest) GetInit() *FollowInMemoryMessagesRequest_InitMessage {
+	if x, ok := x.GetMessage().(*FollowInMemoryMessagesRequest_Init); ok {
+		return x.Init
+	}
+	return nil
+}
+
+func (x *FollowInMemoryMessagesRequest) GetAck() *FollowInMemoryMessagesRequest_AckMessage {
+	if x, ok := x.GetMessage().(*FollowInMemoryMessagesRequest_Ack); ok {
+		return x.Ack
+	}
+	return nil
+}
+
+type isFollowInMemoryMessagesRequest_Message interface {
+	isFollowInMemoryMessagesRequest_Message()
+}
+
+type FollowInMemoryMessagesRequest_Init struct {
+	Init *FollowInMemoryMessagesRequest_InitMessage `protobuf:"bytes,1,opt,name=init,proto3,oneof"`
+}
+
+type FollowInMemoryMessagesRequest_Ack struct {
+	Ack *FollowInMemoryMessagesRequest_AckMessage `protobuf:"bytes,2,opt,name=ack,proto3,oneof"`
+}
+
+func (*FollowInMemoryMessagesRequest_Init) isFollowInMemoryMessagesRequest_Message() {}
+
+func (*FollowInMemoryMessagesRequest_Ack) isFollowInMemoryMessagesRequest_Message() {}
+
+type FollowInMemoryMessagesResponse struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	// Types that are assignable to Message:
+	//
+	//	*FollowInMemoryMessagesResponse_Ctrl
+	//	*FollowInMemoryMessagesResponse_Data
+	Message isFollowInMemoryMessagesResponse_Message `protobuf_oneof:"message"`
+}
+
+func (x *FollowInMemoryMessagesResponse) Reset() {
+	*x = FollowInMemoryMessagesResponse{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_mq_proto_msgTypes[31]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *FollowInMemoryMessagesResponse) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*FollowInMemoryMessagesResponse) ProtoMessage() {}
+
+func (x *FollowInMemoryMessagesResponse) ProtoReflect() protoreflect.Message {
+	mi := &file_mq_proto_msgTypes[31]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use FollowInMemoryMessagesResponse.ProtoReflect.Descriptor instead.
+func (*FollowInMemoryMessagesResponse) Descriptor() ([]byte, []int) {
+	return file_mq_proto_rawDescGZIP(), []int{31}
+}
+
+func (m *FollowInMemoryMessagesResponse) GetMessage() isFollowInMemoryMessagesResponse_Message {
+	if m != nil {
+		return m.Message
+	}
+	return nil
+}
+
+func (x *FollowInMemoryMessagesResponse) GetCtrl() *FollowInMemoryMessagesResponse_CtrlMessage {
+	if x, ok := x.GetMessage().(*FollowInMemoryMessagesResponse_Ctrl); ok {
+		return x.Ctrl
+	}
+	return nil
+}
+
+func (x *FollowInMemoryMessagesResponse) GetData() *DataMessage {
+	if x, ok := x.GetMessage().(*FollowInMemoryMessagesResponse_Data); ok {
+		return x.Data
+	}
+	return nil
+}
+
+type isFollowInMemoryMessagesResponse_Message interface {
+	isFollowInMemoryMessagesResponse_Message()
+}
+
+type FollowInMemoryMessagesResponse_Ctrl struct {
+	Ctrl *FollowInMemoryMessagesResponse_CtrlMessage `protobuf:"bytes,1,opt,name=ctrl,proto3,oneof"`
+}
+
+type FollowInMemoryMessagesResponse_Data struct {
+	Data *DataMessage `protobuf:"bytes,2,opt,name=data,proto3,oneof"`
+}
+
+func (*FollowInMemoryMessagesResponse_Ctrl) isFollowInMemoryMessagesResponse_Message() {}
+
+func (*FollowInMemoryMessagesResponse_Data) isFollowInMemoryMessagesResponse_Message() {}
+
 type ClosePublishersRequest struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -1738,7 +2010,7 @@ type ClosePublishersRequest struct {
 func (x *ClosePublishersRequest) Reset() {
 	*x = ClosePublishersRequest{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_mq_proto_msgTypes[28]
+		mi := &file_mq_proto_msgTypes[32]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -1751,7 +2023,7 @@ func (x *ClosePublishersRequest) String() string {
 func (*ClosePublishersRequest) ProtoMessage() {}
 
 func (x *ClosePublishersRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_mq_proto_msgTypes[28]
+	mi := &file_mq_proto_msgTypes[32]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -1764,7 +2036,7 @@ func (x *ClosePublishersRequest) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use ClosePublishersRequest.ProtoReflect.Descriptor instead.
 func (*ClosePublishersRequest) Descriptor() ([]byte, []int) {
-	return file_mq_proto_rawDescGZIP(), []int{28}
+	return file_mq_proto_rawDescGZIP(), []int{32}
 }
 
 func (x *ClosePublishersRequest) GetTopic() *Topic {
@@ -1790,7 +2062,7 @@ type ClosePublishersResponse struct {
 func (x *ClosePublishersResponse) Reset() {
 	*x = ClosePublishersResponse{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_mq_proto_msgTypes[29]
+		mi := &file_mq_proto_msgTypes[33]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -1803,7 +2075,7 @@ func (x *ClosePublishersResponse) String() string {
 func (*ClosePublishersResponse) ProtoMessage() {}
 
 func (x *ClosePublishersResponse) ProtoReflect() protoreflect.Message {
-	mi := &file_mq_proto_msgTypes[29]
+	mi := &file_mq_proto_msgTypes[33]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -1816,7 +2088,7 @@ func (x *ClosePublishersResponse) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use ClosePublishersResponse.ProtoReflect.Descriptor instead.
 func (*ClosePublishersResponse) Descriptor() ([]byte, []int) {
-	return file_mq_proto_rawDescGZIP(), []int{29}
+	return file_mq_proto_rawDescGZIP(), []int{33}
 }
 
 type CloseSubscribersRequest struct {
@@ -1831,7 +2103,7 @@ type CloseSubscribersRequest struct {
 func (x *CloseSubscribersRequest) Reset() {
 	*x = CloseSubscribersRequest{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_mq_proto_msgTypes[30]
+		mi := &file_mq_proto_msgTypes[34]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -1844,7 +2116,7 @@ func (x *CloseSubscribersRequest) String() string {
 func (*CloseSubscribersRequest) ProtoMessage() {}
 
 func (x *CloseSubscribersRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_mq_proto_msgTypes[30]
+	mi := &file_mq_proto_msgTypes[34]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -1857,7 +2129,7 @@ func (x *CloseSubscribersRequest) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use CloseSubscribersRequest.ProtoReflect.Descriptor instead.
 func (*CloseSubscribersRequest) Descriptor() ([]byte, []int) {
-	return file_mq_proto_rawDescGZIP(), []int{30}
+	return file_mq_proto_rawDescGZIP(), []int{34}
 }
 
 func (x *CloseSubscribersRequest) GetTopic() *Topic {
@@ -1883,7 +2155,7 @@ type CloseSubscribersResponse struct {
 func (x *CloseSubscribersResponse) Reset() {
 	*x = CloseSubscribersResponse{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_mq_proto_msgTypes[31]
+		mi := &file_mq_proto_msgTypes[35]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -1896,7 +2168,7 @@ func (x *CloseSubscribersResponse) String() string {
 func (*CloseSubscribersResponse) ProtoMessage() {}
 
 func (x *CloseSubscribersResponse) ProtoReflect() protoreflect.Message {
-	mi := &file_mq_proto_msgTypes[31]
+	mi := &file_mq_proto_msgTypes[35]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -1909,7 +2181,7 @@ func (x *CloseSubscribersResponse) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use CloseSubscribersResponse.ProtoReflect.Descriptor instead.
 func (*CloseSubscribersResponse) Descriptor() ([]byte, []int) {
-	return file_mq_proto_rawDescGZIP(), []int{31}
+	return file_mq_proto_rawDescGZIP(), []int{35}
 }
 
 type PublisherToPubBalancerRequest_InitMessage struct {
@@ -1923,7 +2195,7 @@ type PublisherToPubBalancerRequest_InitMessage struct {
 func (x *PublisherToPubBalancerRequest_InitMessage) Reset() {
 	*x = PublisherToPubBalancerRequest_InitMessage{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_mq_proto_msgTypes[33]
+		mi := &file_mq_proto_msgTypes[37]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -1936,7 +2208,7 @@ func (x *PublisherToPubBalancerRequest_InitMessage) String() string {
 func (*PublisherToPubBalancerRequest_InitMessage) ProtoMessage() {}
 
 func (x *PublisherToPubBalancerRequest_InitMessage) ProtoReflect() protoreflect.Message {
-	mi := &file_mq_proto_msgTypes[33]
+	mi := &file_mq_proto_msgTypes[37]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -1972,7 +2244,7 @@ type SubscriberToSubCoordinatorRequest_InitMessage struct {
 func (x *SubscriberToSubCoordinatorRequest_InitMessage) Reset() {
 	*x = SubscriberToSubCoordinatorRequest_InitMessage{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_mq_proto_msgTypes[34]
+		mi := &file_mq_proto_msgTypes[38]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -1985,7 +2257,7 @@ func (x *SubscriberToSubCoordinatorRequest_InitMessage) String() string {
 func (*SubscriberToSubCoordinatorRequest_InitMessage) ProtoMessage() {}
 
 func (x *SubscriberToSubCoordinatorRequest_InitMessage) ProtoReflect() protoreflect.Message {
-	mi := &file_mq_proto_msgTypes[34]
+	mi := &file_mq_proto_msgTypes[38]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -2034,7 +2306,7 @@ type SubscriberToSubCoordinatorRequest_AckMessage struct {
 func (x *SubscriberToSubCoordinatorRequest_AckMessage) Reset() {
 	*x = SubscriberToSubCoordinatorRequest_AckMessage{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_mq_proto_msgTypes[35]
+		mi := &file_mq_proto_msgTypes[39]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -2047,7 +2319,7 @@ func (x *SubscriberToSubCoordinatorRequest_AckMessage) String() string {
 func (*SubscriberToSubCoordinatorRequest_AckMessage) ProtoMessage() {}
 
 func (x *SubscriberToSubCoordinatorRequest_AckMessage) ProtoReflect() protoreflect.Message {
-	mi := &file_mq_proto_msgTypes[35]
+	mi := &file_mq_proto_msgTypes[39]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -2090,7 +2362,7 @@ type SubscriberToSubCoordinatorResponse_AssignedPartition struct {
 func (x *SubscriberToSubCoordinatorResponse_AssignedPartition) Reset() {
 	*x = SubscriberToSubCoordinatorResponse_AssignedPartition{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_mq_proto_msgTypes[36]
+		mi := &file_mq_proto_msgTypes[40]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -2103,7 +2375,7 @@ func (x *SubscriberToSubCoordinatorResponse_AssignedPartition) String() string {
 func (*SubscriberToSubCoordinatorResponse_AssignedPartition) ProtoMessage() {}
 
 func (x *SubscriberToSubCoordinatorResponse_AssignedPartition) ProtoReflect() protoreflect.Message {
-	mi := &file_mq_proto_msgTypes[36]
+	mi := &file_mq_proto_msgTypes[40]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -2152,7 +2424,7 @@ type SubscriberToSubCoordinatorResponse_Assignment struct {
 func (x *SubscriberToSubCoordinatorResponse_Assignment) Reset() {
 	*x = SubscriberToSubCoordinatorResponse_Assignment{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_mq_proto_msgTypes[37]
+		mi := &file_mq_proto_msgTypes[41]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -2165,7 +2437,7 @@ func (x *SubscriberToSubCoordinatorResponse_Assignment) String() string {
 func (*SubscriberToSubCoordinatorResponse_Assignment) ProtoMessage() {}
 
 func (x *SubscriberToSubCoordinatorResponse_Assignment) ProtoReflect() protoreflect.Message {
-	mi := &file_mq_proto_msgTypes[37]
+	mi := &file_mq_proto_msgTypes[41]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -2209,7 +2481,7 @@ type PublishMessageRequest_InitMessage struct {
 func (x *PublishMessageRequest_InitMessage) Reset() {
 	*x = PublishMessageRequest_InitMessage{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_mq_proto_msgTypes[38]
+		mi := &file_mq_proto_msgTypes[42]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -2222,7 +2494,7 @@ func (x *PublishMessageRequest_InitMessage) String() string {
 func (*PublishMessageRequest_InitMessage) ProtoMessage() {}
 
 func (x *PublishMessageRequest_InitMessage) ProtoReflect() protoreflect.Message {
-	mi := &file_mq_proto_msgTypes[38]
+	mi := &file_mq_proto_msgTypes[42]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -2282,7 +2554,7 @@ type SubscribeMessageRequest_InitMessage struct {
 func (x *SubscribeMessageRequest_InitMessage) Reset() {
 	*x = SubscribeMessageRequest_InitMessage{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_mq_proto_msgTypes[39]
+		mi := &file_mq_proto_msgTypes[43]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -2295,7 +2567,7 @@ func (x *SubscribeMessageRequest_InitMessage) String() string {
 func (*SubscribeMessageRequest_InitMessage) ProtoMessage() {}
 
 func (x *SubscribeMessageRequest_InitMessage) ProtoReflect() protoreflect.Message {
-	mi := &file_mq_proto_msgTypes[39]
+	mi := &file_mq_proto_msgTypes[43]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -2308,7 +2580,7 @@ func (x *SubscribeMessageRequest_InitMessage) ProtoReflect() protoreflect.Messag
 
 // Deprecated: Use SubscribeMessageRequest_InitMessage.ProtoReflect.Descriptor instead.
 func (*SubscribeMessageRequest_InitMessage) Descriptor() ([]byte, []int) {
-	return file_mq_proto_rawDescGZIP(), []int{26, 0}
+	return file_mq_proto_rawDescGZIP(), []int{28, 0}
 }
 
 func (x *SubscribeMessageRequest_InitMessage) GetConsumerGroup() string {
@@ -2364,7 +2636,7 @@ type SubscribeMessageRequest_AckMessage struct {
 func (x *SubscribeMessageRequest_AckMessage) Reset() {
 	*x = SubscribeMessageRequest_AckMessage{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_mq_proto_msgTypes[40]
+		mi := &file_mq_proto_msgTypes[44]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -2377,7 +2649,7 @@ func (x *SubscribeMessageRequest_AckMessage) String() string {
 func (*SubscribeMessageRequest_AckMessage) ProtoMessage() {}
 
 func (x *SubscribeMessageRequest_AckMessage) ProtoReflect() protoreflect.Message {
-	mi := &file_mq_proto_msgTypes[40]
+	mi := &file_mq_proto_msgTypes[44]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -2390,7 +2662,7 @@ func (x *SubscribeMessageRequest_AckMessage) ProtoReflect() protoreflect.Message
 
 // Deprecated: Use SubscribeMessageRequest_AckMessage.ProtoReflect.Descriptor instead.
 func (*SubscribeMessageRequest_AckMessage) Descriptor() ([]byte, []int) {
-	return file_mq_proto_rawDescGZIP(), []int{26, 1}
+	return file_mq_proto_rawDescGZIP(), []int{28, 1}
 }
 
 func (x *SubscribeMessageRequest_AckMessage) GetSequence() int64 {
@@ -2413,7 +2685,7 @@ type SubscribeMessageResponse_CtrlMessage struct {
 func (x *SubscribeMessageResponse_CtrlMessage) Reset() {
 	*x = SubscribeMessageResponse_CtrlMessage{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_mq_proto_msgTypes[41]
+		mi := &file_mq_proto_msgTypes[45]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -2426,7 +2698,7 @@ func (x *SubscribeMessageResponse_CtrlMessage) String() string {
 func (*SubscribeMessageResponse_CtrlMessage) ProtoMessage() {}
 
 func (x *SubscribeMessageResponse_CtrlMessage) ProtoReflect() protoreflect.Message {
-	mi := &file_mq_proto_msgTypes[41]
+	mi := &file_mq_proto_msgTypes[45]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -2439,7 +2711,7 @@ func (x *SubscribeMessageResponse_CtrlMessage) ProtoReflect() protoreflect.Messa
 
 // Deprecated: Use SubscribeMessageResponse_CtrlMessage.ProtoReflect.Descriptor instead.
 func (*SubscribeMessageResponse_CtrlMessage) Descriptor() ([]byte, []int) {
-	return file_mq_proto_rawDescGZIP(), []int{27, 0}
+	return file_mq_proto_rawDescGZIP(), []int{29, 0}
 }
 
 func (x *SubscribeMessageResponse_CtrlMessage) GetError() string {
@@ -2463,6 +2735,187 @@ func (x *SubscribeMessageResponse_CtrlMessage) GetIsEndOfTopic() bool {
 	return false
 }
 
+type FollowInMemoryMessagesRequest_InitMessage struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	ConsumerGroup   string           `protobuf:"bytes,1,opt,name=consumer_group,json=consumerGroup,proto3" json:"consumer_group,omitempty"`
+	ConsumerId      string           `protobuf:"bytes,2,opt,name=consumer_id,json=consumerId,proto3" json:"consumer_id,omitempty"`
+	FollowerId      int32            `protobuf:"varint,3,opt,name=follower_id,json=followerId,proto3" json:"follower_id,omitempty"`
+	Topic           *Topic           `protobuf:"bytes,4,opt,name=topic,proto3" json:"topic,omitempty"`
+	PartitionOffset *PartitionOffset `protobuf:"bytes,5,opt,name=partition_offset,json=partitionOffset,proto3" json:"partition_offset,omitempty"`
+}
+
+func (x *FollowInMemoryMessagesRequest_InitMessage) Reset() {
+	*x = FollowInMemoryMessagesRequest_InitMessage{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_mq_proto_msgTypes[46]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *FollowInMemoryMessagesRequest_InitMessage) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*FollowInMemoryMessagesRequest_InitMessage) ProtoMessage() {}
+
+func (x *FollowInMemoryMessagesRequest_InitMessage) ProtoReflect() protoreflect.Message {
+	mi := &file_mq_proto_msgTypes[46]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use FollowInMemoryMessagesRequest_InitMessage.ProtoReflect.Descriptor instead.
+func (*FollowInMemoryMessagesRequest_InitMessage) Descriptor() ([]byte, []int) {
+	return file_mq_proto_rawDescGZIP(), []int{30, 0}
+}
+
+func (x *FollowInMemoryMessagesRequest_InitMessage) GetConsumerGroup() string {
+	if x != nil {
+		return x.ConsumerGroup
+	}
+	return ""
+}
+
+func (x *FollowInMemoryMessagesRequest_InitMessage) GetConsumerId() string {
+	if x != nil {
+		return x.ConsumerId
+	}
+	return ""
+}
+
+func (x *FollowInMemoryMessagesRequest_InitMessage) GetFollowerId() int32 {
+	if x != nil {
+		return x.FollowerId
+	}
+	return 0
+}
+
+func (x *FollowInMemoryMessagesRequest_InitMessage) GetTopic() *Topic {
+	if x != nil {
+		return x.Topic
+	}
+	return nil
+}
+
+func (x *FollowInMemoryMessagesRequest_InitMessage) GetPartitionOffset() *PartitionOffset {
+	if x != nil {
+		return x.PartitionOffset
+	}
+	return nil
+}
+
+type FollowInMemoryMessagesRequest_AckMessage struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Sequence int64 `protobuf:"varint,1,opt,name=sequence,proto3" json:"sequence,omitempty"`
+}
+
+func (x *FollowInMemoryMessagesRequest_AckMessage) Reset() {
+	*x = FollowInMemoryMessagesRequest_AckMessage{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_mq_proto_msgTypes[47]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *FollowInMemoryMessagesRequest_AckMessage) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*FollowInMemoryMessagesRequest_AckMessage) ProtoMessage() {}
+
+func (x *FollowInMemoryMessagesRequest_AckMessage) ProtoReflect() protoreflect.Message {
+	mi := &file_mq_proto_msgTypes[47]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use FollowInMemoryMessagesRequest_AckMessage.ProtoReflect.Descriptor instead.
+func (*FollowInMemoryMessagesRequest_AckMessage) Descriptor() ([]byte, []int) {
+	return file_mq_proto_rawDescGZIP(), []int{30, 1}
+}
+
+func (x *FollowInMemoryMessagesRequest_AckMessage) GetSequence() int64 {
+	if x != nil {
+		return x.Sequence
+	}
+	return 0
+}
+
+type FollowInMemoryMessagesResponse_CtrlMessage struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	FlushedSequence     int64 `protobuf:"varint,1,opt,name=flushed_sequence,json=flushedSequence,proto3" json:"flushed_sequence,omitempty"`
+	FollowerChangedToId int32 `protobuf:"varint,2,opt,name=follower_changed_to_id,json=followerChangedToId,proto3" json:"follower_changed_to_id,omitempty"`
+}
+
+func (x *FollowInMemoryMessagesResponse_CtrlMessage) Reset() {
+	*x = FollowInMemoryMessagesResponse_CtrlMessage{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_mq_proto_msgTypes[48]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *FollowInMemoryMessagesResponse_CtrlMessage) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*FollowInMemoryMessagesResponse_CtrlMessage) ProtoMessage() {}
+
+func (x *FollowInMemoryMessagesResponse_CtrlMessage) ProtoReflect() protoreflect.Message {
+	mi := &file_mq_proto_msgTypes[48]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use FollowInMemoryMessagesResponse_CtrlMessage.ProtoReflect.Descriptor instead.
+func (*FollowInMemoryMessagesResponse_CtrlMessage) Descriptor() ([]byte, []int) {
+	return file_mq_proto_rawDescGZIP(), []int{31, 0}
+}
+
+func (x *FollowInMemoryMessagesResponse_CtrlMessage) GetFlushedSequence() int64 {
+	if x != nil {
+		return x.FlushedSequence
+	}
+	return 0
+}
+
+func (x *FollowInMemoryMessagesResponse_CtrlMessage) GetFollowerChangedToId() int32 {
+	if x != nil {
+		return x.FollowerChangedToId
+	}
+	return 0
+}
+
 var File_mq_proto protoreflect.FileDescriptor
 
 var file_mq_proto_rawDesc = []byte{
@@ -2707,161 +3160,235 @@ var file_mq_proto_rawDesc = []byte{
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 }
 
 var (
@@ -2877,7 +3404,7 @@ func file_mq_proto_rawDescGZIP() []byte {
 }
 
 var file_mq_proto_enumTypes = make([]protoimpl.EnumInfo, 1)
-var file_mq_proto_msgTypes = make([]protoimpl.MessageInfo, 42)
+var file_mq_proto_msgTypes = make([]protoimpl.MessageInfo, 49)
 var file_mq_proto_goTypes = []interface{}{
 	(PartitionOffsetStartType)(0),                                // 0: messaging_pb.PartitionOffsetStartType
 	(*FindBrokerLeaderRequest)(nil),                              // 1: messaging_pb.FindBrokerLeaderRequest
@@ -2906,32 +3433,39 @@ var file_mq_proto_goTypes = []interface{}{
 	(*DataMessage)(nil),                                          // 24: messaging_pb.DataMessage
 	(*PublishMessageRequest)(nil),                                // 25: messaging_pb.PublishMessageRequest
 	(*PublishMessageResponse)(nil),                               // 26: messaging_pb.PublishMessageResponse
-	(*SubscribeMessageRequest)(nil),                              // 27: messaging_pb.SubscribeMessageRequest
-	(*SubscribeMessageResponse)(nil),                             // 28: messaging_pb.SubscribeMessageResponse
-	(*ClosePublishersRequest)(nil),                               // 29: messaging_pb.ClosePublishersRequest
-	(*ClosePublishersResponse)(nil),                              // 30: messaging_pb.ClosePublishersResponse
-	(*CloseSubscribersRequest)(nil),                              // 31: messaging_pb.CloseSubscribersRequest
-	(*CloseSubscribersResponse)(nil),                             // 32: messaging_pb.CloseSubscribersResponse
-	nil,                                                          // 33: messaging_pb.BrokerStats.StatsEntry
-	(*PublisherToPubBalancerRequest_InitMessage)(nil),            // 34: messaging_pb.PublisherToPubBalancerRequest.InitMessage
-	(*SubscriberToSubCoordinatorRequest_InitMessage)(nil),        // 35: messaging_pb.SubscriberToSubCoordinatorRequest.InitMessage
-	(*SubscriberToSubCoordinatorRequest_AckMessage)(nil),         // 36: messaging_pb.SubscriberToSubCoordinatorRequest.AckMessage
-	(*SubscriberToSubCoordinatorResponse_AssignedPartition)(nil), // 37: messaging_pb.SubscriberToSubCoordinatorResponse.AssignedPartition
-	(*SubscriberToSubCoordinatorResponse_Assignment)(nil),        // 38: messaging_pb.SubscriberToSubCoordinatorResponse.Assignment
-	(*PublishMessageRequest_InitMessage)(nil),                    // 39: messaging_pb.PublishMessageRequest.InitMessage
-	(*SubscribeMessageRequest_InitMessage)(nil),                  // 40: messaging_pb.SubscribeMessageRequest.InitMessage
-	(*SubscribeMessageRequest_AckMessage)(nil),                   // 41: messaging_pb.SubscribeMessageRequest.AckMessage
-	(*SubscribeMessageResponse_CtrlMessage)(nil),                 // 42: messaging_pb.SubscribeMessageResponse.CtrlMessage
+	(*PublishFollowMeRequest)(nil),                               // 27: messaging_pb.PublishFollowMeRequest
+	(*PublishFollowMeResponse)(nil),                              // 28: messaging_pb.PublishFollowMeResponse
+	(*SubscribeMessageRequest)(nil),                              // 29: messaging_pb.SubscribeMessageRequest
+	(*SubscribeMessageResponse)(nil),                             // 30: messaging_pb.SubscribeMessageResponse
+	(*FollowInMemoryMessagesRequest)(nil),                        // 31: messaging_pb.FollowInMemoryMessagesRequest
+	(*FollowInMemoryMessagesResponse)(nil),                       // 32: messaging_pb.FollowInMemoryMessagesResponse
+	(*ClosePublishersRequest)(nil),                               // 33: messaging_pb.ClosePublishersRequest
+	(*ClosePublishersResponse)(nil),                              // 34: messaging_pb.ClosePublishersResponse
+	(*CloseSubscribersRequest)(nil),                              // 35: messaging_pb.CloseSubscribersRequest
+	(*CloseSubscribersResponse)(nil),                             // 36: messaging_pb.CloseSubscribersResponse
+	nil,                                                          // 37: messaging_pb.BrokerStats.StatsEntry
+	(*PublisherToPubBalancerRequest_InitMessage)(nil),            // 38: messaging_pb.PublisherToPubBalancerRequest.InitMessage
+	(*SubscriberToSubCoordinatorRequest_InitMessage)(nil),        // 39: messaging_pb.SubscriberToSubCoordinatorRequest.InitMessage
+	(*SubscriberToSubCoordinatorRequest_AckMessage)(nil),         // 40: messaging_pb.SubscriberToSubCoordinatorRequest.AckMessage
+	(*SubscriberToSubCoordinatorResponse_AssignedPartition)(nil), // 41: messaging_pb.SubscriberToSubCoordinatorResponse.AssignedPartition
+	(*SubscriberToSubCoordinatorResponse_Assignment)(nil),        // 42: messaging_pb.SubscriberToSubCoordinatorResponse.Assignment
+	(*PublishMessageRequest_InitMessage)(nil),                    // 43: messaging_pb.PublishMessageRequest.InitMessage
+	(*SubscribeMessageRequest_InitMessage)(nil),                  // 44: messaging_pb.SubscribeMessageRequest.InitMessage
+	(*SubscribeMessageRequest_AckMessage)(nil),                   // 45: messaging_pb.SubscribeMessageRequest.AckMessage
+	(*SubscribeMessageResponse_CtrlMessage)(nil),                 // 46: messaging_pb.SubscribeMessageResponse.CtrlMessage
+	(*FollowInMemoryMessagesRequest_InitMessage)(nil),            // 47: messaging_pb.FollowInMemoryMessagesRequest.InitMessage
+	(*FollowInMemoryMessagesRequest_AckMessage)(nil),             // 48: messaging_pb.FollowInMemoryMessagesRequest.AckMessage
+	(*FollowInMemoryMessagesResponse_CtrlMessage)(nil),           // 49: messaging_pb.FollowInMemoryMessagesResponse.CtrlMessage
 }
 var file_mq_proto_depIdxs = []int32{
 	3,  // 0: messaging_pb.Offset.topic:type_name -> messaging_pb.Topic
 	6,  // 1: messaging_pb.Offset.partition_offsets:type_name -> messaging_pb.PartitionOffset
 	4,  // 2: messaging_pb.PartitionOffset.partition:type_name -> messaging_pb.Partition
 	0,  // 3: messaging_pb.PartitionOffset.start_type:type_name -> messaging_pb.PartitionOffsetStartType
-	33, // 4: messaging_pb.BrokerStats.stats:type_name -> messaging_pb.BrokerStats.StatsEntry
+	37, // 4: messaging_pb.BrokerStats.stats:type_name -> messaging_pb.BrokerStats.StatsEntry
 	3,  // 5: messaging_pb.TopicPartitionStats.topic:type_name -> messaging_pb.Topic
 	4,  // 6: messaging_pb.TopicPartitionStats.partition:type_name -> messaging_pb.Partition
-	34, // 7: messaging_pb.PublisherToPubBalancerRequest.init:type_name -> messaging_pb.PublisherToPubBalancerRequest.InitMessage
+	38, // 7: messaging_pb.PublisherToPubBalancerRequest.init:type_name -> messaging_pb.PublisherToPubBalancerRequest.InitMessage
 	7,  // 8: messaging_pb.PublisherToPubBalancerRequest.stats:type_name -> messaging_pb.BrokerStats
 	3,  // 9: messaging_pb.ConfigureTopicRequest.topic:type_name -> messaging_pb.Topic
 	19, // 10: messaging_pb.ConfigureTopicResponse.broker_partition_assignments:type_name -> messaging_pb.BrokerPartitionAssignment
@@ -2942,55 +3476,67 @@ var file_mq_proto_depIdxs = []int32{
 	4,  // 15: messaging_pb.BrokerPartitionAssignment.partition:type_name -> messaging_pb.Partition
 	3,  // 16: messaging_pb.AssignTopicPartitionsRequest.topic:type_name -> messaging_pb.Topic
 	19, // 17: messaging_pb.AssignTopicPartitionsRequest.broker_partition_assignments:type_name -> messaging_pb.BrokerPartitionAssignment
-	35, // 18: messaging_pb.SubscriberToSubCoordinatorRequest.init:type_name -> messaging_pb.SubscriberToSubCoordinatorRequest.InitMessage
-	36, // 19: messaging_pb.SubscriberToSubCoordinatorRequest.ack:type_name -> messaging_pb.SubscriberToSubCoordinatorRequest.AckMessage
-	38, // 20: messaging_pb.SubscriberToSubCoordinatorResponse.assignment:type_name -> messaging_pb.SubscriberToSubCoordinatorResponse.Assignment
-	39, // 21: messaging_pb.PublishMessageRequest.init:type_name -> messaging_pb.PublishMessageRequest.InitMessage
+	39, // 18: messaging_pb.SubscriberToSubCoordinatorRequest.init:type_name -> messaging_pb.SubscriberToSubCoordinatorRequest.InitMessage
+	40, // 19: messaging_pb.SubscriberToSubCoordinatorRequest.ack:type_name -> messaging_pb.SubscriberToSubCoordinatorRequest.AckMessage
+	42, // 20: messaging_pb.SubscriberToSubCoordinatorResponse.assignment:type_name -> messaging_pb.SubscriberToSubCoordinatorResponse.Assignment
+	43, // 21: messaging_pb.PublishMessageRequest.init:type_name -> messaging_pb.PublishMessageRequest.InitMessage
 	24, // 22: messaging_pb.PublishMessageRequest.data:type_name -> messaging_pb.DataMessage
-	40, // 23: messaging_pb.SubscribeMessageRequest.init:type_name -> messaging_pb.SubscribeMessageRequest.InitMessage
-	41, // 24: messaging_pb.SubscribeMessageRequest.ack:type_name -> messaging_pb.SubscribeMessageRequest.AckMessage
-	42, // 25: messaging_pb.SubscribeMessageResponse.ctrl:type_name -> messaging_pb.SubscribeMessageResponse.CtrlMessage
-	24, // 26: messaging_pb.SubscribeMessageResponse.data:type_name -> messaging_pb.DataMessage
-	3,  // 27: messaging_pb.ClosePublishersRequest.topic:type_name -> messaging_pb.Topic
-	3,  // 28: messaging_pb.CloseSubscribersRequest.topic:type_name -> messaging_pb.Topic
-	8,  // 29: messaging_pb.BrokerStats.StatsEntry.value:type_name -> messaging_pb.TopicPartitionStats
-	3,  // 30: messaging_pb.SubscriberToSubCoordinatorRequest.InitMessage.topic:type_name -> messaging_pb.Topic
-	4,  // 31: messaging_pb.SubscriberToSubCoordinatorRequest.AckMessage.partition:type_name -> messaging_pb.Partition
-	4,  // 32: messaging_pb.SubscriberToSubCoordinatorResponse.AssignedPartition.partition:type_name -> messaging_pb.Partition
-	37, // 33: messaging_pb.SubscriberToSubCoordinatorResponse.Assignment.assigned_partitions:type_name -> messaging_pb.SubscriberToSubCoordinatorResponse.AssignedPartition
-	3,  // 34: messaging_pb.PublishMessageRequest.InitMessage.topic:type_name -> messaging_pb.Topic
-	4,  // 35: messaging_pb.PublishMessageRequest.InitMessage.partition:type_name -> messaging_pb.Partition
-	3,  // 36: messaging_pb.SubscribeMessageRequest.InitMessage.topic:type_name -> messaging_pb.Topic
-	6,  // 37: messaging_pb.SubscribeMessageRequest.InitMessage.partition_offset:type_name -> messaging_pb.PartitionOffset
-	1,  // 38: messaging_pb.SeaweedMessaging.FindBrokerLeader:input_type -> messaging_pb.FindBrokerLeaderRequest
-	9,  // 39: messaging_pb.SeaweedMessaging.PublisherToPubBalancer:input_type -> messaging_pb.PublisherToPubBalancerRequest
-	11, // 40: messaging_pb.SeaweedMessaging.BalanceTopics:input_type -> messaging_pb.BalanceTopicsRequest
-	15, // 41: messaging_pb.SeaweedMessaging.ListTopics:input_type -> messaging_pb.ListTopicsRequest
-	13, // 42: messaging_pb.SeaweedMessaging.ConfigureTopic:input_type -> messaging_pb.ConfigureTopicRequest
-	17, // 43: messaging_pb.SeaweedMessaging.LookupTopicBrokers:input_type -> messaging_pb.LookupTopicBrokersRequest
-	20, // 44: messaging_pb.SeaweedMessaging.AssignTopicPartitions:input_type -> messaging_pb.AssignTopicPartitionsRequest
-	29, // 45: messaging_pb.SeaweedMessaging.ClosePublishers:input_type -> messaging_pb.ClosePublishersRequest
-	31, // 46: messaging_pb.SeaweedMessaging.CloseSubscribers:input_type -> messaging_pb.CloseSubscribersRequest
-	22, // 47: messaging_pb.SeaweedMessaging.SubscriberToSubCoordinator:input_type -> messaging_pb.SubscriberToSubCoordinatorRequest
-	25, // 48: messaging_pb.SeaweedMessaging.PublishMessage:input_type -> messaging_pb.PublishMessageRequest
-	27, // 49: messaging_pb.SeaweedMessaging.SubscribeMessage:input_type -> messaging_pb.SubscribeMessageRequest
-	2,  // 50: messaging_pb.SeaweedMessaging.FindBrokerLeader:output_type -> messaging_pb.FindBrokerLeaderResponse
-	10, // 51: messaging_pb.SeaweedMessaging.PublisherToPubBalancer:output_type -> messaging_pb.PublisherToPubBalancerResponse
-	12, // 52: messaging_pb.SeaweedMessaging.BalanceTopics:output_type -> messaging_pb.BalanceTopicsResponse
-	16, // 53: messaging_pb.SeaweedMessaging.ListTopics:output_type -> messaging_pb.ListTopicsResponse
-	14, // 54: messaging_pb.SeaweedMessaging.ConfigureTopic:output_type -> messaging_pb.ConfigureTopicResponse
-	18, // 55: messaging_pb.SeaweedMessaging.LookupTopicBrokers:output_type -> messaging_pb.LookupTopicBrokersResponse
-	21, // 56: messaging_pb.SeaweedMessaging.AssignTopicPartitions:output_type -> messaging_pb.AssignTopicPartitionsResponse
-	30, // 57: messaging_pb.SeaweedMessaging.ClosePublishers:output_type -> messaging_pb.ClosePublishersResponse
-	32, // 58: messaging_pb.SeaweedMessaging.CloseSubscribers:output_type -> messaging_pb.CloseSubscribersResponse
-	23, // 59: messaging_pb.SeaweedMessaging.SubscriberToSubCoordinator:output_type -> messaging_pb.SubscriberToSubCoordinatorResponse
-	26, // 60: messaging_pb.SeaweedMessaging.PublishMessage:output_type -> messaging_pb.PublishMessageResponse
-	28, // 61: messaging_pb.SeaweedMessaging.SubscribeMessage:output_type -> messaging_pb.SubscribeMessageResponse
-	50, // [50:62] is the sub-list for method output_type
-	38, // [38:50] is the sub-list for method input_type
-	38, // [38:38] is the sub-list for extension type_name
-	38, // [38:38] is the sub-list for extension extendee
-	0,  // [0:38] is the sub-list for field type_name
+	3,  // 23: messaging_pb.PublishFollowMeRequest.topic:type_name -> messaging_pb.Topic
+	4,  // 24: messaging_pb.PublishFollowMeRequest.partition:type_name -> messaging_pb.Partition
+	44, // 25: messaging_pb.SubscribeMessageRequest.init:type_name -> messaging_pb.SubscribeMessageRequest.InitMessage
+	45, // 26: messaging_pb.SubscribeMessageRequest.ack:type_name -> messaging_pb.SubscribeMessageRequest.AckMessage
+	46, // 27: messaging_pb.SubscribeMessageResponse.ctrl:type_name -> messaging_pb.SubscribeMessageResponse.CtrlMessage
+	24, // 28: messaging_pb.SubscribeMessageResponse.data:type_name -> messaging_pb.DataMessage
+	47, // 29: messaging_pb.FollowInMemoryMessagesRequest.init:type_name -> messaging_pb.FollowInMemoryMessagesRequest.InitMessage
+	48, // 30: messaging_pb.FollowInMemoryMessagesRequest.ack:type_name -> messaging_pb.FollowInMemoryMessagesRequest.AckMessage
+	49, // 31: messaging_pb.FollowInMemoryMessagesResponse.ctrl:type_name -> messaging_pb.FollowInMemoryMessagesResponse.CtrlMessage
+	24, // 32: messaging_pb.FollowInMemoryMessagesResponse.data:type_name -> messaging_pb.DataMessage
+	3,  // 33: messaging_pb.ClosePublishersRequest.topic:type_name -> messaging_pb.Topic
+	3,  // 34: messaging_pb.CloseSubscribersRequest.topic:type_name -> messaging_pb.Topic
+	8,  // 35: messaging_pb.BrokerStats.StatsEntry.value:type_name -> messaging_pb.TopicPartitionStats
+	3,  // 36: messaging_pb.SubscriberToSubCoordinatorRequest.InitMessage.topic:type_name -> messaging_pb.Topic
+	4,  // 37: messaging_pb.SubscriberToSubCoordinatorRequest.AckMessage.partition:type_name -> messaging_pb.Partition
+	4,  // 38: messaging_pb.SubscriberToSubCoordinatorResponse.AssignedPartition.partition:type_name -> messaging_pb.Partition
+	41, // 39: messaging_pb.SubscriberToSubCoordinatorResponse.Assignment.assigned_partitions:type_name -> messaging_pb.SubscriberToSubCoordinatorResponse.AssignedPartition
+	3,  // 40: messaging_pb.PublishMessageRequest.InitMessage.topic:type_name -> messaging_pb.Topic
+	4,  // 41: messaging_pb.PublishMessageRequest.InitMessage.partition:type_name -> messaging_pb.Partition
+	3,  // 42: messaging_pb.SubscribeMessageRequest.InitMessage.topic:type_name -> messaging_pb.Topic
+	6,  // 43: messaging_pb.SubscribeMessageRequest.InitMessage.partition_offset:type_name -> messaging_pb.PartitionOffset
+	3,  // 44: messaging_pb.FollowInMemoryMessagesRequest.InitMessage.topic:type_name -> messaging_pb.Topic
+	6,  // 45: messaging_pb.FollowInMemoryMessagesRequest.InitMessage.partition_offset:type_name -> messaging_pb.PartitionOffset
+	1,  // 46: messaging_pb.SeaweedMessaging.FindBrokerLeader:input_type -> messaging_pb.FindBrokerLeaderRequest
+	9,  // 47: messaging_pb.SeaweedMessaging.PublisherToPubBalancer:input_type -> messaging_pb.PublisherToPubBalancerRequest
+	11, // 48: messaging_pb.SeaweedMessaging.BalanceTopics:input_type -> messaging_pb.BalanceTopicsRequest
+	15, // 49: messaging_pb.SeaweedMessaging.ListTopics:input_type -> messaging_pb.ListTopicsRequest
+	13, // 50: messaging_pb.SeaweedMessaging.ConfigureTopic:input_type -> messaging_pb.ConfigureTopicRequest
+	17, // 51: messaging_pb.SeaweedMessaging.LookupTopicBrokers:input_type -> messaging_pb.LookupTopicBrokersRequest
+	20, // 52: messaging_pb.SeaweedMessaging.AssignTopicPartitions:input_type -> messaging_pb.AssignTopicPartitionsRequest
+	33, // 53: messaging_pb.SeaweedMessaging.ClosePublishers:input_type -> messaging_pb.ClosePublishersRequest
+	35, // 54: messaging_pb.SeaweedMessaging.CloseSubscribers:input_type -> messaging_pb.CloseSubscribersRequest
+	22, // 55: messaging_pb.SeaweedMessaging.SubscriberToSubCoordinator:input_type -> messaging_pb.SubscriberToSubCoordinatorRequest
+	25, // 56: messaging_pb.SeaweedMessaging.PublishMessage:input_type -> messaging_pb.PublishMessageRequest
+	29, // 57: messaging_pb.SeaweedMessaging.SubscribeMessage:input_type -> messaging_pb.SubscribeMessageRequest
+	27, // 58: messaging_pb.SeaweedMessaging.PublishFollowMe:input_type -> messaging_pb.PublishFollowMeRequest
+	31, // 59: messaging_pb.SeaweedMessaging.FollowInMemoryMessages:input_type -> messaging_pb.FollowInMemoryMessagesRequest
+	2,  // 60: messaging_pb.SeaweedMessaging.FindBrokerLeader:output_type -> messaging_pb.FindBrokerLeaderResponse
+	10, // 61: messaging_pb.SeaweedMessaging.PublisherToPubBalancer:output_type -> messaging_pb.PublisherToPubBalancerResponse
+	12, // 62: messaging_pb.SeaweedMessaging.BalanceTopics:output_type -> messaging_pb.BalanceTopicsResponse
+	16, // 63: messaging_pb.SeaweedMessaging.ListTopics:output_type -> messaging_pb.ListTopicsResponse
+	14, // 64: messaging_pb.SeaweedMessaging.ConfigureTopic:output_type -> messaging_pb.ConfigureTopicResponse
+	18, // 65: messaging_pb.SeaweedMessaging.LookupTopicBrokers:output_type -> messaging_pb.LookupTopicBrokersResponse
+	21, // 66: messaging_pb.SeaweedMessaging.AssignTopicPartitions:output_type -> messaging_pb.AssignTopicPartitionsResponse
+	34, // 67: messaging_pb.SeaweedMessaging.ClosePublishers:output_type -> messaging_pb.ClosePublishersResponse
+	36, // 68: messaging_pb.SeaweedMessaging.CloseSubscribers:output_type -> messaging_pb.CloseSubscribersResponse
+	23, // 69: messaging_pb.SeaweedMessaging.SubscriberToSubCoordinator:output_type -> messaging_pb.SubscriberToSubCoordinatorResponse
+	26, // 70: messaging_pb.SeaweedMessaging.PublishMessage:output_type -> messaging_pb.PublishMessageResponse
+	30, // 71: messaging_pb.SeaweedMessaging.SubscribeMessage:output_type -> messaging_pb.SubscribeMessageResponse
+	28, // 72: messaging_pb.SeaweedMessaging.PublishFollowMe:output_type -> messaging_pb.PublishFollowMeResponse
+	32, // 73: messaging_pb.SeaweedMessaging.FollowInMemoryMessages:output_type -> messaging_pb.FollowInMemoryMessagesResponse
+	60, // [60:74] is the sub-list for method output_type
+	46, // [46:60] is the sub-list for method input_type
+	46, // [46:46] is the sub-list for extension type_name
+	46, // [46:46] is the sub-list for extension extendee
+	0,  // [0:46] is the sub-list for field type_name
 }
 
 func init() { file_mq_proto_init() }
@@ -3312,7 +3858,7 @@ func file_mq_proto_init() {
 			}
 		}
 		file_mq_proto_msgTypes[26].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*SubscribeMessageRequest); i {
+			switch v := v.(*PublishFollowMeRequest); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -3324,7 +3870,7 @@ func file_mq_proto_init() {
 			}
 		}
 		file_mq_proto_msgTypes[27].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*SubscribeMessageResponse); i {
+			switch v := v.(*PublishFollowMeResponse); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -3336,7 +3882,7 @@ func file_mq_proto_init() {
 			}
 		}
 		file_mq_proto_msgTypes[28].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*ClosePublishersRequest); i {
+			switch v := v.(*SubscribeMessageRequest); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -3348,7 +3894,7 @@ func file_mq_proto_init() {
 			}
 		}
 		file_mq_proto_msgTypes[29].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*ClosePublishersResponse); i {
+			switch v := v.(*SubscribeMessageResponse); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -3360,7 +3906,7 @@ func file_mq_proto_init() {
 			}
 		}
 		file_mq_proto_msgTypes[30].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*CloseSubscribersRequest); i {
+			switch v := v.(*FollowInMemoryMessagesRequest); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -3372,7 +3918,19 @@ func file_mq_proto_init() {
 			}
 		}
 		file_mq_proto_msgTypes[31].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*CloseSubscribersResponse); i {
+			switch v := v.(*FollowInMemoryMessagesResponse); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_mq_proto_msgTypes[32].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*ClosePublishersRequest); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -3384,7 +3942,7 @@ func file_mq_proto_init() {
 			}
 		}
 		file_mq_proto_msgTypes[33].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*PublisherToPubBalancerRequest_InitMessage); i {
+			switch v := v.(*ClosePublishersResponse); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -3396,7 +3954,7 @@ func file_mq_proto_init() {
 			}
 		}
 		file_mq_proto_msgTypes[34].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*SubscriberToSubCoordinatorRequest_InitMessage); i {
+			switch v := v.(*CloseSubscribersRequest); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -3408,19 +3966,7 @@ func file_mq_proto_init() {
 			}
 		}
 		file_mq_proto_msgTypes[35].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*SubscriberToSubCoordinatorRequest_AckMessage); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-		file_mq_proto_msgTypes[36].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*SubscriberToSubCoordinatorResponse_AssignedPartition); i {
+			switch v := v.(*CloseSubscribersResponse); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -3432,7 +3978,7 @@ func file_mq_proto_init() {
 			}
 		}
 		file_mq_proto_msgTypes[37].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*SubscriberToSubCoordinatorResponse_Assignment); i {
+			switch v := v.(*PublisherToPubBalancerRequest_InitMessage); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -3444,7 +3990,7 @@ func file_mq_proto_init() {
 			}
 		}
 		file_mq_proto_msgTypes[38].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*PublishMessageRequest_InitMessage); i {
+			switch v := v.(*SubscriberToSubCoordinatorRequest_InitMessage); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -3456,7 +4002,7 @@ func file_mq_proto_init() {
 			}
 		}
 		file_mq_proto_msgTypes[39].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*SubscribeMessageRequest_InitMessage); i {
+			switch v := v.(*SubscriberToSubCoordinatorRequest_AckMessage); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -3468,7 +4014,7 @@ func file_mq_proto_init() {
 			}
 		}
 		file_mq_proto_msgTypes[40].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*SubscribeMessageRequest_AckMessage); i {
+			switch v := v.(*SubscriberToSubCoordinatorResponse_AssignedPartition); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -3480,6 +4026,54 @@ func file_mq_proto_init() {
 			}
 		}
 		file_mq_proto_msgTypes[41].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*SubscriberToSubCoordinatorResponse_Assignment); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_mq_proto_msgTypes[42].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*PublishMessageRequest_InitMessage); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_mq_proto_msgTypes[43].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*SubscribeMessageRequest_InitMessage); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_mq_proto_msgTypes[44].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*SubscribeMessageRequest_AckMessage); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_mq_proto_msgTypes[45].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*SubscribeMessageResponse_CtrlMessage); i {
 			case 0:
 				return &v.state
@@ -3491,6 +4085,42 @@ func file_mq_proto_init() {
 				return nil
 			}
 		}
+		file_mq_proto_msgTypes[46].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*FollowInMemoryMessagesRequest_InitMessage); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_mq_proto_msgTypes[47].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*FollowInMemoryMessagesRequest_AckMessage); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_mq_proto_msgTypes[48].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*FollowInMemoryMessagesResponse_CtrlMessage); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
 	}
 	file_mq_proto_msgTypes[8].OneofWrappers = []interface{}{
 		(*PublisherToPubBalancerRequest_Init)(nil),
@@ -3507,21 +4137,29 @@ func file_mq_proto_init() {
 		(*PublishMessageRequest_Init)(nil),
 		(*PublishMessageRequest_Data)(nil),
 	}
-	file_mq_proto_msgTypes[26].OneofWrappers = []interface{}{
+	file_mq_proto_msgTypes[28].OneofWrappers = []interface{}{
 		(*SubscribeMessageRequest_Init)(nil),
 		(*SubscribeMessageRequest_Ack)(nil),
 	}
-	file_mq_proto_msgTypes[27].OneofWrappers = []interface{}{
+	file_mq_proto_msgTypes[29].OneofWrappers = []interface{}{
 		(*SubscribeMessageResponse_Ctrl)(nil),
 		(*SubscribeMessageResponse_Data)(nil),
 	}
+	file_mq_proto_msgTypes[30].OneofWrappers = []interface{}{
+		(*FollowInMemoryMessagesRequest_Init)(nil),
+		(*FollowInMemoryMessagesRequest_Ack)(nil),
+	}
+	file_mq_proto_msgTypes[31].OneofWrappers = []interface{}{
+		(*FollowInMemoryMessagesResponse_Ctrl)(nil),
+		(*FollowInMemoryMessagesResponse_Data)(nil),
+	}
 	type x struct{}
 	out := protoimpl.TypeBuilder{
 		File: protoimpl.DescBuilder{
 			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
 			RawDescriptor: file_mq_proto_rawDesc,
 			NumEnums:      1,
-			NumMessages:   42,
+			NumMessages:   49,
 			NumExtensions: 0,
 			NumServices:   1,
 		},
diff --git a/weed/pb/mq_pb/mq_grpc.pb.go b/weed/pb/mq_pb/mq_grpc.pb.go
index c2ddcdc62..64518d605 100644
--- a/weed/pb/mq_pb/mq_grpc.pb.go
+++ b/weed/pb/mq_pb/mq_grpc.pb.go
@@ -31,6 +31,8 @@ const (
 	SeaweedMessaging_SubscriberToSubCoordinator_FullMethodName = "/messaging_pb.SeaweedMessaging/SubscriberToSubCoordinator"
 	SeaweedMessaging_PublishMessage_FullMethodName             = "/messaging_pb.SeaweedMessaging/PublishMessage"
 	SeaweedMessaging_SubscribeMessage_FullMethodName           = "/messaging_pb.SeaweedMessaging/SubscribeMessage"
+	SeaweedMessaging_PublishFollowMe_FullMethodName            = "/messaging_pb.SeaweedMessaging/PublishFollowMe"
+	SeaweedMessaging_FollowInMemoryMessages_FullMethodName     = "/messaging_pb.SeaweedMessaging/FollowInMemoryMessages"
 )
 
 // SeaweedMessagingClient is the client API for SeaweedMessaging service.
@@ -55,6 +57,9 @@ type SeaweedMessagingClient interface {
 	// data plane for each topic partition
 	PublishMessage(ctx context.Context, opts ...grpc.CallOption) (SeaweedMessaging_PublishMessageClient, error)
 	SubscribeMessage(ctx context.Context, in *SubscribeMessageRequest, opts ...grpc.CallOption) (SeaweedMessaging_SubscribeMessageClient, error)
+	// The lead broker asks a follower broker to follow itself
+	PublishFollowMe(ctx context.Context, in *PublishFollowMeRequest, opts ...grpc.CallOption) (*PublishFollowMeResponse, error)
+	FollowInMemoryMessages(ctx context.Context, in *FollowInMemoryMessagesRequest, opts ...grpc.CallOption) (SeaweedMessaging_FollowInMemoryMessagesClient, error)
 }
 
 type seaweedMessagingClient struct {
@@ -262,6 +267,47 @@ func (x *seaweedMessagingSubscribeMessageClient) Recv() (*SubscribeMessageRespon
 	return m, nil
 }
 
+func (c *seaweedMessagingClient) PublishFollowMe(ctx context.Context, in *PublishFollowMeRequest, opts ...grpc.CallOption) (*PublishFollowMeResponse, error) {
+	out := new(PublishFollowMeResponse)
+	err := c.cc.Invoke(ctx, SeaweedMessaging_PublishFollowMe_FullMethodName, in, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+func (c *seaweedMessagingClient) FollowInMemoryMessages(ctx context.Context, in *FollowInMemoryMessagesRequest, opts ...grpc.CallOption) (SeaweedMessaging_FollowInMemoryMessagesClient, error) {
+	stream, err := c.cc.NewStream(ctx, &SeaweedMessaging_ServiceDesc.Streams[4], SeaweedMessaging_FollowInMemoryMessages_FullMethodName, opts...)
+	if err != nil {
+		return nil, err
+	}
+	x := &seaweedMessagingFollowInMemoryMessagesClient{stream}
+	if err := x.ClientStream.SendMsg(in); err != nil {
+		return nil, err
+	}
+	if err := x.ClientStream.CloseSend(); err != nil {
+		return nil, err
+	}
+	return x, nil
+}
+
+type SeaweedMessaging_FollowInMemoryMessagesClient interface {
+	Recv() (*FollowInMemoryMessagesResponse, error)
+	grpc.ClientStream
+}
+
+type seaweedMessagingFollowInMemoryMessagesClient struct {
+	grpc.ClientStream
+}
+
+func (x *seaweedMessagingFollowInMemoryMessagesClient) Recv() (*FollowInMemoryMessagesResponse, error) {
+	m := new(FollowInMemoryMessagesResponse)
+	if err := x.ClientStream.RecvMsg(m); err != nil {
+		return nil, err
+	}
+	return m, nil
+}
+
 // SeaweedMessagingServer is the server API for SeaweedMessaging service.
 // All implementations must embed UnimplementedSeaweedMessagingServer
 // for forward compatibility
@@ -284,6 +330,9 @@ type SeaweedMessagingServer interface {
 	// data plane for each topic partition
 	PublishMessage(SeaweedMessaging_PublishMessageServer) error
 	SubscribeMessage(*SubscribeMessageRequest, SeaweedMessaging_SubscribeMessageServer) error
+	// The lead broker asks a follower broker to follow itself
+	PublishFollowMe(context.Context, *PublishFollowMeRequest) (*PublishFollowMeResponse, error)
+	FollowInMemoryMessages(*FollowInMemoryMessagesRequest, SeaweedMessaging_FollowInMemoryMessagesServer) error
 	mustEmbedUnimplementedSeaweedMessagingServer()
 }
 
@@ -327,6 +376,12 @@ func (UnimplementedSeaweedMessagingServer) PublishMessage(SeaweedMessaging_Publi
 func (UnimplementedSeaweedMessagingServer) SubscribeMessage(*SubscribeMessageRequest, SeaweedMessaging_SubscribeMessageServer) error {
 	return status.Errorf(codes.Unimplemented, "method SubscribeMessage not implemented")
 }
+func (UnimplementedSeaweedMessagingServer) PublishFollowMe(context.Context, *PublishFollowMeRequest) (*PublishFollowMeResponse, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method PublishFollowMe not implemented")
+}
+func (UnimplementedSeaweedMessagingServer) FollowInMemoryMessages(*FollowInMemoryMessagesRequest, SeaweedMessaging_FollowInMemoryMessagesServer) error {
+	return status.Errorf(codes.Unimplemented, "method FollowInMemoryMessages not implemented")
+}
 func (UnimplementedSeaweedMessagingServer) mustEmbedUnimplementedSeaweedMessagingServer() {}
 
 // UnsafeSeaweedMessagingServer may be embedded to opt out of forward compatibility for this service.
@@ -583,6 +638,45 @@ func (x *seaweedMessagingSubscribeMessageServer) Send(m *SubscribeMessageRespons
 	return x.ServerStream.SendMsg(m)
 }
 
+func _SeaweedMessaging_PublishFollowMe_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(PublishFollowMeRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(SeaweedMessagingServer).PublishFollowMe(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: SeaweedMessaging_PublishFollowMe_FullMethodName,
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(SeaweedMessagingServer).PublishFollowMe(ctx, req.(*PublishFollowMeRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
+func _SeaweedMessaging_FollowInMemoryMessages_Handler(srv interface{}, stream grpc.ServerStream) error {
+	m := new(FollowInMemoryMessagesRequest)
+	if err := stream.RecvMsg(m); err != nil {
+		return err
+	}
+	return srv.(SeaweedMessagingServer).FollowInMemoryMessages(m, &seaweedMessagingFollowInMemoryMessagesServer{stream})
+}
+
+type SeaweedMessaging_FollowInMemoryMessagesServer interface {
+	Send(*FollowInMemoryMessagesResponse) error
+	grpc.ServerStream
+}
+
+type seaweedMessagingFollowInMemoryMessagesServer struct {
+	grpc.ServerStream
+}
+
+func (x *seaweedMessagingFollowInMemoryMessagesServer) Send(m *FollowInMemoryMessagesResponse) error {
+	return x.ServerStream.SendMsg(m)
+}
+
 // SeaweedMessaging_ServiceDesc is the grpc.ServiceDesc for SeaweedMessaging service.
 // It's only intended for direct use with grpc.RegisterService,
 // and not to be introspected or modified (even as a copy)
@@ -622,6 +716,10 @@ var SeaweedMessaging_ServiceDesc = grpc.ServiceDesc{
 			MethodName: "CloseSubscribers",
 			Handler:    _SeaweedMessaging_CloseSubscribers_Handler,
 		},
+		{
+			MethodName: "PublishFollowMe",
+			Handler:    _SeaweedMessaging_PublishFollowMe_Handler,
+		},
 	},
 	Streams: []grpc.StreamDesc{
 		{
@@ -647,6 +745,11 @@ var SeaweedMessaging_ServiceDesc = grpc.ServiceDesc{
 			Handler:       _SeaweedMessaging_SubscribeMessage_Handler,
 			ServerStreams: true,
 		},
+		{
+			StreamName:    "FollowInMemoryMessages",
+			Handler:       _SeaweedMessaging_FollowInMemoryMessages_Handler,
+			ServerStreams: true,
+		},
 	},
 	Metadata: "mq.proto",
 }
diff --git a/weed/util/log_buffer/log_buffer.go b/weed/util/log_buffer/log_buffer.go
index bf787eb79..7709a43e9 100644
--- a/weed/util/log_buffer/log_buffer.go
+++ b/weed/util/log_buffer/log_buffer.go
@@ -27,6 +27,7 @@ type LogFlushFuncType func(logBuffer *LogBuffer, startTime, stopTime time.Time,
 type LogReadFromDiskFuncType func(startPosition MessagePosition, stopTsNs int64, eachLogEntryFn EachLogEntryFuncType) (lastReadPosition MessagePosition, isDone bool, err error)
 
 type LogBuffer struct {
+	LastFlushTsNs  int64
 	name           string
 	prevBuffers    *SealedBuffers
 	buf            []byte
diff --git a/weed/util/log_buffer/log_read.go b/weed/util/log_buffer/log_read.go
index 5529a6691..d7ca47155 100644
--- a/weed/util/log_buffer/log_read.go
+++ b/weed/util/log_buffer/log_read.go
@@ -57,7 +57,7 @@ func (logBuffer *LogBuffer) LoopProcessLogData(readerName string, startPosition
 		if bytesBuf != nil {
 			readSize = bytesBuf.Len()
 		}
-		glog.V(0).Infof("%s ReadFromBuffer at %v batch:%d, read bytes:%v batch:%d", readerName, lastReadPosition, lastReadPosition.BatchIndex, readSize, batchIndex)
+		glog.V(0).Infof("%s ReadFromBuffer at %v batch %d. Read bytes %v batch %d", readerName, lastReadPosition, lastReadPosition.BatchIndex, readSize, batchIndex)
 		if bytesBuf == nil {
 			if batchIndex >= 0 {
 				lastReadPosition = NewMessagePosition(lastReadPosition.UnixNano(), batchIndex)
@@ -72,6 +72,10 @@ func (logBuffer *LogBuffer) LoopProcessLogData(readerName string, startPosition
 				isDone = true
 				return
 			}
+			if logBuffer.IsStopping() {
+				isDone = true
+				return
+			}
 		}
 
 		buf := bytesBuf.Bytes()
@@ -107,6 +111,7 @@ func (logBuffer *LogBuffer) LoopProcessLogData(readerName string, startPosition
 				return
 			}
 			if isDone {
+				glog.V(0).Infof("LoopProcessLogData2: %s process log entry %d", readerName, batchSize+1)
 				return
 			}