In-memory cache that prevents redundant async work
In-memory cache that prevents redundant async work.
var Cache = require'waiting-cache';var cache = ;// if nothing is cached or being cached, produces a cache misscacheget'foo'console.log'cache miss: ' + value;;// mark `foo` as being cachedcachecaching'foo';// the cache will wait until `foo` has been cachedcacheget'foo'console.log'cache hit after waiting: ' + value;;// put `foo` into the cachecacheset'foo' 'bar';// this calls back immediatelycacheget'foo'console.log'cache hit: ' + value;;
Create a new cache.
Get the value stored at
Waits when the value is being cached (as signaled by
If the value couldn't be found returns
key in the cache. Notifies waiting
key as being cached. Call
Cache#set to resolve.
With npm do
$ npm install waiting-cache
Copyright (c) 2013 Julian Gruber <email@example.com>
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.