golang-lru
This provides the lru package which implements a fixed-size
thread safe LRU cache. It is based on the cache in Groupcache.
Documentation
Full docs are available on Go Packages
Example
Using the LRU is very simple:
package main
import (
"fmt"
"github.com/hashicorp/golang-lru/v2"
)
func main() {
l, _ := lru.New[int, any](128)
for i := 0; i < 256; i++ {
l.Add(i, nil)
}
if l.Len() != 128 {
panic(fmt.Sprintf("bad len: %v", l.Len()))
}
}