Instrument cache fetch hit and cache fetch misses

1 files changed, 12 insertions, 0 deletions

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