cache

type Cache interface {
	Put(key Key, value Value)
	PutWithTimeout(key Key, value Value, t time.Duration)
	Get(key Key) (Value, bool)
	Del(key Key) Value
	Len() int
	Close()
}

type Config struct {
	MaxLen    int
	Callback  OnEvicted
	CacheTime time.Duration
}

type Key interface{}

type OnEvicted func(key Key, value Value)

type Value interface{}