Cache-Stack Example

var cacheStack = require('cache-stack'); // fake a long operation that takes 1 second to the complete. function longOp(onResult, stack) { setTimeout(function() { console.log('running longOp (should only be logged once)'); onResult(null, 'ok', stack); }, 1000); } // bind our longOp and config to stacked var stacked = cacheStack.bind(this, longOp, { expires: '+1 hour' }); // Call stacked 3 times immediately. After 1 second (the // length of time our longOp takes to run), all 3 callbacks // will be called. stacked(callback); stacked(callback); stacked(callback); // When we do another call to stacked, it will be returned the // cached version immediately. setTimeout(function() { stacked(callback); }, 2000); var i = 0; function callback(err, res) { console.log(res + ':' + i); i++; };