1 files changed, 7 insertions, 0 deletions
diff --git a/lib/gitlab/diff/highlight_cache.rb b/lib/gitlab/diff/highlight_cache.rb
index f950d01fdf0..8e9dc3a305f 100644
--- a/lib/gitlab/diff/highlight_cache.rb
+++ b/lib/gitlab/diff/highlight_cache.rb
@@ -193,6 +193,8 @@ module Gitlab
           results = redis.hmget(key, file_paths)
         end
 
+        record_hit_ratio(results)
+
         results.map! do |result|
           Gitlab::Json.parse(gzip_decompress(result), symbolize_names: true) unless result.nil?
         end
@@ -215,6 +217,11 @@ module Gitlab
       def current_transaction
         ::Gitlab::Metrics::WebTransaction.current
       end
+
+      def record_hit_ratio(results)
+        current_transaction&.increment(:gitlab_redis_diff_caching_requests_total)
+        current_transaction&.increment(:gitlab_redis_diff_caching_hits_total) if results.any?(&:present?)
+      end
     end
   end
 end