cache-file 
Store and get files from cache with Node.js.
Getting started
Install with npm: npm install cache-file
Examples
var cache = require('cache-file');
// store test.jpg inside a test folder in cache
cache.store('test.jpg');
// get test.jpg from cache and save it as test-restored.jpg
cache.get('test.jpg', 'test-restored.jpg');
// check if test.jpg exists in cache
cache.check('test.jpg');
// get the path to test.jpg in cache
cache.path('test.jpg');
// remove test.jpg from cache
cache.clean('test.jpg');API
.store(src, dest)
Store a file inside cache. Use dest to specify a custom name.
.get(src, dest)
Get a cached file and save it to a desired location.
.check(src)
Check if a cached file exists.
.path(src)
Get the path to a cached file.
.clean(src)
Remove a file from cache.