Mango Cache

Partial implementations of Guava Cache in Go.

Supported cache replacement policies:

LRU
Segmented LRU (default)
TinyLFU (experimental)

The TinyLFU implementation is inspired by Caffeine by Ben Manes and go-tinylfu by Damian Gryski.

Download

go get -u github.com/goburrow/cache

Example

package main
import ( 	"fmt" 	"math/rand" 	"time"
"github.com/goburrow/cache" )
func main() { 	load := func(k cache.Key) (cache.Value, error) { 		time.Sleep(100 * time.Millisecond) // Slow task 		return fmt.Sprintf("%d", k), nil 	} 	// Create a loading cache 	c := cache.NewLoadingCache(load, 		cache.WithMaximumSize(100),                 // Limit number of entries in the cache. 		cache.WithExpireAfterAccess(1*time.Minute), // Expire entries after 1 minute since last accessed. 		cache.WithRefreshAfterWrite(2*time.Minute), // Expire entries after 2 minutes since last created. 	)
getTicker := time.Tick(100 * time.Millisecond) 	reportTicker := time.Tick(5 * time.Second) 	for { 		select { 		case <-getTicker: 			,  = c.Get(rand.Intn(200)) 		case <-reportTicker: 			st := cache.Stats{} 			c.Stats(&st) 			fmt.Printf("%+v\n", st) 		} 	} }

Performance

See traces and benchmark

report

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