🍰 cachego

$ go get -u github.com/FishGoddess/cachego

package main

import (
	"fmt"
	"time"

	"github.com/FishGoddess/cachego"
)

func main() {
	// Use NewCache function to create a cache.
	// By default, it creates a standard cache which evicts entries randomly.
	// Use WithShardings to shard cache to several parts for higher performance.
	// Use WithGC to clean expired entries every 10 minutes.
	cache := cachego.NewCache(cachego.WithGC(10*time.Minute), cachego.WithShardings(64))

	// Set an entry to cache with ttl.
	cache.Set("key", 123, time.Second)

	// Get an entry from cache.
	value, ok := cache.Get("key")
	fmt.Println(value, ok) // 123 true

	// Check how many entries stores in cache.
	size := cache.Size()
	fmt.Println(size) // 1

	// Clean expired entries.
	cleans := cache.GC()
	fmt.Println(cleans) // 1

	// Set an entry which doesn't have ttl.
	cache.Set("key", 123, cachego.NoTTL)

	// Remove an entry.
	removedValue := cache.Remove("key")
	fmt.Println(removedValue) // 123

	// Reset resets cache to initial status.
	cache.Reset()

	// Get value from cache and load it to cache if not found.
	value, ok = cache.Get("key")
	if !ok {
		// Loaded entry will be set to cache and returned.
		// By default, it will use singleflight.
		value, _ = cache.Load("key", time.Second, func() (value interface{}, err error) {
			return 666, nil
		})
	}

	fmt.Println(value) // 666

	// You can use WithLRU to specify the type of cache to lru.
	// Also, try WithLFU if you want to use lfu to evict data.
	cache = cachego.NewCache(cachego.WithLRU(100))
	cache = cachego.NewCache(cachego.WithLFU(100))

	// Use NewCacheWithReport to create a cache with report.
	cache, reporter := cachego.NewCacheWithReport(cachego.WithCacheName("test"))
	fmt.Println(reporter.CacheName())
	fmt.Println(reporter.CacheType())
}

$ make bench

goos: darwin
goarch: amd64
cpu: Intel(R) Core(TM) i7-9750H CPU @ 2.60GHz

BenchmarkCachegoGet-12                  25214618               47.2 ns/op             0 B/op          0 allocs/op
BenchmarkCachegoGetLRU-12                8169417              149.0 ns/op             0 B/op          0 allocs/op
BenchmarkCachegoGetLFU-12                7071300              171.6 ns/op             0 B/op          0 allocs/op
BenchmarkCachegoGetSharding-12          72568048               16.8 ns/op             0 B/op          0 allocs/op
BenchmarkGcacheGet-12                    4765129              252.1 ns/op            16 B/op          1 allocs/op
BenchmarkGcacheGetLRU-12                 5735739              214.0 ns/op            16 B/op          1 allocs/op
BenchmarkGcacheGetLFU-12                 4830048              250.8 ns/op            16 B/op          1 allocs/op
BenchmarkEcacheGet-12                   11515140              101.0 ns/op             0 B/op          0 allocs/op
BenchmarkEcache2Get-12                  12255506               95.6 ns/op             0 B/op          0 allocs/op
BenchmarkBigcacheGet-12                 21711988               60.4 ns/op             7 B/op          2 allocs/op
BenchmarkFreecacheGet-12                24903388               44.3 ns/op            27 B/op          2 allocs/op
BenchmarkGoCacheGet-12                  19818014               61.4 ns/op             0 B/op          0 allocs/op

BenchmarkCachegoSet-12                   5743768               209.6 ns/op           16 B/op          1 allocs/op
BenchmarkCachegoSetLRU-12                6105316               189.9 ns/op           16 B/op          1 allocs/op
BenchmarkCachegoSetLFU-12                5505601               217.2 ns/op           16 B/op          1 allocs/op
BenchmarkCachegoSetSharding-12          39012607                31.2 ns/op           16 B/op          1 allocs/op
BenchmarkGcacheSet-12                    3326841               365.3 ns/op           56 B/op          3 allocs/op
BenchmarkGcacheSetLRU-12                 3471307               318.7 ns/op           56 B/op          3 allocs/op
BenchmarkGcacheSetLFU-12                 3896512               335.1 ns/op           56 B/op          3 allocs/op
BenchmarkEcacheSet-12                    7318136               167.5 ns/op           32 B/op          2 allocs/op
BenchmarkEcache2Set-12                   7020867               175.7 ns/op           32 B/op          2 allocs/op
BenchmarkBigcacheSet-12                  4107825               268.9 ns/op           55 B/op          0 allocs/op
BenchmarkFreecacheSet-12                44181687                28.4 ns/op            0 B/op          0 allocs/op
BenchmarkGoCacheSet-12                   4921483               249.0 ns/op           16 B/op          1 allocs/op