Simple async batch with concurrency control and progress reporting.
$ npm install batch
var Batch =batch = ;batch;ids;batch;batch;
Contain the "job" index, response value, duration information, and completion data.
index: 1value: 'bar'pending: 2total: 3complete: 2percent: 66start: Thu Oct 04 2012 12:25:53 GMT-end: Thu Oct 04 2012 12:25:53 GMT-duration: 0