freelru

Overview ¶

Package freelru is a sharded LRU cache that stores live values.

It is the backend that meets the selection criteria without giving anything up: writes land and stay, per-entry lifetimes are honored at millisecond granularity, the entry bound evicts, and the read and write paths are allocation-free and sharded rather than funneled through a worker goroutine. Eviction is plain LRU per shard, so it is not scan-resistant — the same trade the forwarded default makes.