package simplelru // LRUCache is the interface for simple LRU cache. type LRUCache interface { // Adds a value to the cache, returns true if an eviction occurred and // updates the "recently used"-ness of the key. Add(key, value interface{}) bool // Returns key's value from the cache and // updates the "recently used"-ness of the key. #value, isFound Get(key interface{}) (value interface{}, ok bool) // Check if a key exsists in cache without updating the recent-ness. Contains(key interface{}) (ok bool) // Returns key's value without updating the "recently used"-ness of the key. Peek(key interface{}) (value interface{}, ok bool) // Removes a key from the cache. Remove(key interface{}) bool // Removes the oldest entry from cache. RemoveOldest() (interface{}, interface{}, bool) // Returns the oldest entry from the cache. #key, value, isFound GetOldest() (interface{}, interface{}, bool) // Returns a slice of the keys in the cache, from oldest to newest. Keys() []interface{} // Returns the number of items in the cache. Len() int // Clear all cache entries Purge() }