From e9a4d117f2fb6f10af3357a8a6591ba7022d9c62 Mon Sep 17 00:00:00 2001
From: Paco Guzman <pacoguzmanp@gmail.com>
Date: Wed, 29 Jun 2016 16:05:57 +0200
Subject: [PATCH] Instrument cache fetch hit and cache fetch misses

---
 lib/gitlab/metrics/subscribers/rails_cache.rb | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/lib/gitlab/metrics/subscribers/rails_cache.rb b/lib/gitlab/metrics/subscribers/rails_cache.rb
index 8e345e8ae4a..277c860fbef 100644
--- a/lib/gitlab/metrics/subscribers/rails_cache.rb
+++ b/lib/gitlab/metrics/subscribers/rails_cache.rb
@@ -21,6 +21,18 @@ module Gitlab
           increment(:cache_exists, event.duration)
         end
 
+        def cache_fetch_hit(event)
+          return unless current_transaction
+
+          current_transaction.increment(:cache_fetch_hit, 1)
+        end
+
+        def cache_generate(event)
+          return unless current_transaction
+
+          current_transaction.increment(:cache_fetch_miss, 1)
+        end
+
         def increment(key, duration)
           return unless current_transaction
 
-- 
GitLab