gocache 封装 redis,memcached,内存的缓存
最后更新于：2022-04-02 02:38:00
[TOC]
> [github](https://github.com/eko/gocache)
## 概述
- 多个缓存存储：实际上在内存，Redis或您自己的自定义存储中
- 链式缓存：以优先级顺序使用多个缓存（例如，内存然后回退到Redis共享缓存）
- 可加载的缓存：允许您调用回调函数以将数据放回缓存
- 指标缓存，用于存储有关缓存使用情况的指标（命中，未命中，设置成功，设置错误等）
- 封送处理程序可自动封送/解组缓存值作为结构
- 在商店中定义默认值，并在设置数据时覆盖它们
- 通过到期时间和/或使用标签来使缓存无效
### 内置缓存
* [Memory (bigcache)](https://github.com/allegro/bigcache)(allegro/bigcache)
* [Memory (ristretto)](https://github.com/dgraph-io/ristretto)(dgraph-io/ristretto)
* [Memcache](https://github.com/bradfitz/gomemcache)(bradfitz/memcache)
* [Redis](https://github.com/go-redis/redis/v7)(go-redis/redis)
* More to come soon
## 例子
### memched
```
memcacheStore := store.NewMemcache(
memcache.New("10.0.0.1:11211", "10.0.0.2:11211", "10.0.0.3:11212"),
&store.Options{
Expiration: 10*time.Second,
},
)
cacheManager := cache.New(memcacheStore)
err := cacheManager.Set("my-key", []byte("my-value"), &cache.Options{
Expiration: 15*time.Second, // Override default value of 10 seconds defined in the store
})
if err != nil {
panic(err)
}
value := cacheManager.Get("my-key")
cacheManager.Delete("my-key")
cacheManager.Clear() // Clears the entire cache, in case you want to flush all cache
```
### Memory (using Bigcache)
```
bigcacheClient, _ := bigcache.NewBigCache(bigcache.DefaultConfig(5 * time.Minute))
bigcacheStore := store.NewBigcache(bigcacheClient, nil) // No otions provided (as second argument)
cacheManager := cache.New(bigcacheStore)
err := cacheManager.Set("my-key", "my-value", nil)
if err != nil {
panic(err)
}
value := cacheManager.Get("my-key")
```
### Memory (using Ristretto)
```
ristrettoCache, err := ristretto.NewCache(&ristretto.Config{
NumCounters: 1000,
MaxCost: 100,
BufferItems: 64,
})
if err != nil {
panic(err)
}
ristrettoStore := store.NewRistretto(ristrettoCache, nil)
cacheManager := cache.New(ristrettoStore)
err := cacheManager.Set("my-key", "my-value", &cache.Options{Cost: 2})
if err != nil {
panic(err)
}
value := cacheManager.Get("my-key")
cacheManager.Delete("my-key")
```
### Redis
```
redisStore := store.NewRedis(redis.NewClient(&redis.Options{
Addr: "127.0.0.1:6379",
}), nil)
cacheManager := cache.New(redisStore)
err := cacheManager.Set("my-key", "my-value", &cache.Options{Expiration: 15*time.Second})
if err != nil {
panic(err)
}
value := cacheManager.Get("my-key")
```
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