lru

package
v0.0.0-...-e0b69c9 Latest Latest
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 Go to latest Published: Apr 8, 2021 License: MIT Imports: 1 Imported by: 0

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Types

type Cache 

type Cache struct {

	// optional and executed when an entry is purged.
	OnEvicted func(key string, value Value)
	// contains filtered or unexported fields
}

Cache is a LRU cache. It is not safe for concurrent access.

func New 

func New(maxBytes int64, onEvicted func(string, Value)) *Cache

New is the Constructor of Cache

func (*Cache) Add 

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

Add adds a value to the cache.

func (*Cache) Get 

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

Get look ups a key's value

func (*Cache) Len 

func (c *Cache) Len() int

Len the number of cache entries

func (*Cache) RemoveOldest 

func (c *Cache) RemoveOldest()

RemoveOldest removes the oldest item

type Value 

type Value interface {
	Len() int
}

Value use Len to count how many bytes it takes

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