lru

package

v0.0.0-...-873dfe5 Latest Latest Go to latest Published: Aug 26, 2021 License: Apache-2.0 Imports: 1 Imported by: 0

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type Cache struct {
	// contains filtered or unexported fields
}

func New(config *CacheConfig) *Cache

func (c *Cache) Add(key string, val Value)

按key 添加缓存

func (c *Cache) Get(key string) (val Value, ok bool)

获取缓存

func (c *Cache) Len() int

Len the number of cache entries

func (c *Cache) Remove(key string) bool

按key 删除缓存

func (c *Cache) RemoveOldest()

删除最近最少使用的缓存

type CacheConfig struct {
	MaxBytes   int64 // 最大使用内存
	MaxEntries int   // 最大缓存数目

	// 淘汰回调函数
	OnEvicted func(string, Value)
}

a config for cache

type Value interface {
	Len() int
}

Value use Len to count how many bytes it takes