Package cache

This package implements a fixed-size thread safe *R+log(C)* cache.

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

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func NewCache(decay float64, timer rlogc.Timer, size int, cb EvictCB) *Cache

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func (c *Cache) Add(key, value interface{}) (evicted bool)

Adds or replaces a cache entry.

func (c *Cache) Contains(key interface{}) bool

Looks up a cache entry without updating the cache statistics and witout returning it's value.

func (c *Cache) ContainsOrAdd(key, value interface{}) (ok, evicted bool)

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func (c *Cache) Get(key interface{}) (value interface{}, ok bool)

Looks up a cache entry.

func (c *Cache) GetOldest() (key interface{}, value interface{}, ok bool)

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func (c *Cache) Len() int

Returns the number of entries.

func (c *Cache) Peek(key interface{}) (value interface{}, ok bool)

Looks up a cache entry without updating the cache statistics.

func (c *Cache) PeekOrAdd(key, value interface{}) (previous interface{}, ok, evicted bool)

Looks up a cache entry without updating the cache statistics and adds a new entry, if no cache entry was found.

func (c *Cache) Remove(key interface{}) (present bool)

Removes a specific cache entry.

func (c *Cache) RemoveOldest() (key interface{}, value interface{}, ok bool)

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func (c *Cache) Resize(size int) (evicted int)

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type EvictCB func(key, value interface{})

EvictCB is used to get a callback when a cache entry is evicted.