implement and use striped LRU cache to lower mutex contention (#15764)

* Implement Striped LRU cache

* ci

* fix

Co-authored-by: Mattermod <mattermod@users.noreply.github.com>

api4/apitestlib.go

@@ -102,7 +102,11 @@ func setupTestHelper(dbStore store.Store, searchEngine *searchengine.Broker, ent
 	if includeCache {
 		// Adds the cache layer to the test store
 		options = append(options, app.StoreOverride(func(s *app.Server) store.Store {
-			return localcachelayer.NewLocalCacheLayer(dbStore, s.Metrics, s.Cluster, s.CacheProvider)
+			lcl, err2 := localcachelayer.NewLocalCacheLayer(dbStore, s.Metrics, s.Cluster, s.CacheProvider)
+			if err2 != nil {
+				panic(err2)
+			}
+			return lcl
 		}))
 	} else {
 		options = append(options, app.StoreOverride(dbStore))

api4/openGraph.go

@@ -13,7 +13,7 @@ import (
 
 const OPEN_GRAPH_METADATA_CACHE_SIZE = 10000
 
-var openGraphDataCache = cache.NewLRU(&cache.LRUOptions{
+var openGraphDataCache = cache.NewLRU(cache.LRUOptions{
 	Size: OPEN_GRAPH_METADATA_CACHE_SIZE,
 })
 

api4/system.go

@@ -29,7 +29,7 @@ const (
 	MAX_SERVER_BUSY_SECONDS      = 86400
 )
 
-var redirectLocationDataCache = cache.NewLRU(&cache.LRUOptions{
+var redirectLocationDataCache = cache.NewLRU(cache.LRUOptions{
 	Size: REDIRECT_LOCATION_CACHE_SIZE,
 })