in shardedlru.go [198:207]
func (lru *ShardedLRU[K, V]) Contains(key K) (ok bool) { hash := lru.hash(key) shard := (hash >> 16) & lru.mask lru.mus[shard].Lock() ok = lru.lrus[shard].contains(hash, key) lru.mus[shard].Unlock() return }