tree 20cbd0fa8a7de878542144900f0e29c47c78547b
parent fa71ca5cc7c3077cca8c5e79980d76d63721eca4
author Edwin Kempin <ekempin@google.com> 1618406351 +0200
committer Edwin Kempin <ekempin@google.com> 1618913394 +0200

Set a default limit for the in-memory code owner config cache

For Android and Chrome at Google p95 is mostly below 50 code owner
config reads for change. However the worst peek that we observed for p99
is ~6.3k code owner config reads per change. Set a default limit of 10k
for the cache that is well above the worst peek. The only purpose of
this limit is to ensure that we are not running into out-of-memory
errors if a projects has a crazy amount of OWNERS files. If the limit is
reached the latency for code owner computations goes down, but that's
better then running out of memory. According to a back-of-the-envelope
calculation 10k entries should consume about 34 MiB of memory.

Signed-off-by: Edwin Kempin <ekempin@google.com>
Change-Id: Iad98f176b1aea558294e89ee7995a79827bb5bfc