Cache is an LRU cache. It is not safe for concurrent access.
type Cache struct {
// MaxEntries is the maximum number of cache entries before
// an item is evicted. Zero means no limit.
MaxEntries int
// OnEvicted optionally specifies a callback function to be
// executed when an entry is purged from the cache.
OnEvicted func(key Key, value interface{})
// contains filtered or unexported fields
}
func New(maxEntries int) *Cache
New creates a new Cache. If maxEntries is zero, the cache has no limit and it's assumed that eviction is done by the caller.
func (c *Cache) Add(key Key, value interface{})
Add adds a value to the cache.
func (c *Cache) Clear()
Clear purges all stored items from the cache.
func (c *Cache) Get(key Key) (value interface{}, ok bool)
Get looks up a key's value from the cache.
func (c *Cache) Len() int
Len returns the number of items in the cache.
func (c *Cache) Remove(key Key)
Remove removes the provided key from the cache.
func (c *Cache) RemoveOldest()
RemoveOldest removes the oldest item from the cache.
A Key may be any value that is comparable. See http://golang.org/ref/spec#Comparison_operators
type Key interface{}