This go module provides a very simple in-memory key/value cache. It uses no mutex locks; utilizing only 1 go routine, 2 channels, and 1 or 2 tickers depending on if you enable the pruner. The module also exports git/miss statistics that you can plug into expvar, or other metrics modules.

This module has a concept of pruning. Items can be marked prunable, or not prunable. Those marked prunable are deleted after they have not had a get requst within a specified duration. Those marked not-prunable have a different configurable maximum unused age.

I wrote this to cache data from mysql queries for an nginx auth proxy. See a simple example in cache_test.go.