Zeger-Jan van de Weg 3ab026b7d6 Use memoization for commits on diffs ... The Gitaly CommitService is being hammered by n + 1 calls, mostly when finding commits. This leads to this gRPC being turned of on production: https://gitlab.com/gitlab-org/gitaly/issues/514#note_48991378 Hunting down where it came from, most of them were due to MergeRequest#show. To prove this, I set a script to request the MergeRequest#show page 50 times. The GDK was being scraped by Prometheus, where we have metrics on controller#action and their Gitaly calls performed. On both occations I've restarted the full GDK so all caches had to be rebuild. Current master, 806a68a81f, needed 435 requests After this commit, 154 requests		2017-12-12 16:28:26 +01:00
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merge_hash.rb	Move merging of Hashes out of the GroupDescendant concern	2017-10-04 22:49:42 +02:00
strong_memoize.rb	Use memoization for commits on diffs	2017-12-12 16:28:26 +01:00