Documentation ¶
Overview ¶
Copyright 2013 Google Inc.
Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.
Package lru implements an LRU cache. 最近最少使用
Index ¶
Constants ¶
This section is empty.
Variables ¶
This section is empty.
Functions ¶
This section is empty.
Types ¶
type Cache ¶
type Cache struct { // MaxEntries is the maximum number of cache entries before // an item is evicted. Zero means no limit. MaxEntries int // OnEvicted optionally specificies 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 }
Cache is an LRU cache. It is not safe for concurrent access.
func New ¶
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 (*Cache) RemoveOldest ¶
func (c *Cache) RemoveOldest()
RemoveOldest removes the oldest item from the cache.
type Key ¶
type Key interface{}
A Key may be any value that is comparable. See http://golang.org/ref/spec#Comparison_operators