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cachego 是一个拥有分片机制的轻量级内存缓存库，API 友好，支持多种数据淘汰机制，可以应用于所有的 GoLang 应用程序中。
目前已经在多个线上服务中运行稳定，服务日常请求过万 qps，最高抵御过 96w/s qps 的冲击，欢迎使用！👏🏻
历史版本的特性请查看 HISTORY.md。未来版本的新特性和计划请查看 FUTURE.md。
$ 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())
}
更多使用案例请查看 _examples 目录。
$ 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
注：Ecache 只有 LRU 模式，v1 和 v2 两个版本；Freecache 默认是 256 分片，无法调节为 1 个分片进行对比测试。
如果您觉得 cachego 缺少您需要的功能，请不要犹豫，马上参与进来，发起一个 issue。
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