lru

Documentation

Index

• type Cache
  • func NewCache(capacity uint64) *Cache
  • func (c *Cache) Get(key interface{}) (cache.Value, error)
  • func (c *Cache) Len() int
  • func (c *Cache) Put(key interface{}, value cache.Value) (bool, error)

Types

type Cache

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

Cache provides a generic thread-safe lru cache that can be used for storing filters, blocks, etc.

func NewCache

func NewCache(capacity uint64) *Cache

NewCache return a cache with specified capacity, the cache's size can't exceed that given capacity.

func (*Cache) Get

func (c *Cache) Get(key interface{}) (cache.Value, error)

Get will return value for a given key, making the element the most recently accessed item in the process. Will return nil if the key isn't found.

func (*Cache) Len

func (c *Cache) Len() int

Len returns number of elements in the cache.

func (*Cache) Put

func (c *Cache) Put(key interface{}, value cache.Value) (bool, error)

Put inserts a given (key,value) pair into the cache, if the key already exists, it will replace value and update it to be most recent item in cache. The return value indicates whether items had to be evicted to make room for the new element.