From 2bd9b169f39df02991bb80697558fb8ded4ac731 Mon Sep 17 00:00:00 2001
From: Peter Cai <peter@typeblog.net>
Date: Thu, 9 Apr 2020 17:16:04 +0800
Subject: [PATCH] blog: add more comment on cache version

---
 src/blog.rs | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/blog.rs b/src/blog.rs
index 58834c5..e46c19a 100644
--- a/src/blog.rs
+++ b/src/blog.rs
@@ -115,6 +115,11 @@ impl Post {
     }
 }
 
+// This should be bumped each time the parsing / compiling
+// logic of Markdown changes, and each time the Markdown
+// library updates. Updaing this value invalidates all
+// existing cache and they will be recompiled when someone
+// visits.
 const CACHE_VERSION: &'static str = "0001";
 
 // Cached version of rendered blog content HTMLs