batch

Simple async batch with concurrency control and progress reporting.

Installation

$ npm install batch

API

var Batch = require('batch')
  , batch = new Batch;

batch.concurrency(4);

ids.forEach(function(id){
  batch.push(function(done){
    User.get(id, done);
  });
});

batch.on('progress', function(e){

});

batch.end(function(err, users){

});

Progress events

Contain the "job" index, response value, duration information, and completion data.

{ index: 1,
  value: 'bar',
  pending: 2,
  total: 3,
  complete: 2,
  percent: 66,
  start: Thu Oct 04 2012 12:25:53 GMT-0700 (PDT),
  end: Thu Oct 04 2012 12:25:53 GMT-0700 (PDT),
  duration: 0 }

License

MIT

0.6.1 / 2017-05-16

• fix process.nextTick detection in Node.js

0.6.0 / 2017-03-25

• always invoke end callback asynchronously
• fix compatibility with component v1
• fix license field

0.5.3 / 2015-10-01

• fix for browserify

0.5.2 / 2014-12-22

• add brower field
• add license to package.json

0.5.1 / 2014-06-19

• add repository field to readme (exciting)

0.5.0 / 2013-07-29

• add .throws(true) to opt-in to responding with an array of error objects
• make new optional

0.4.0 / 2013-06-05

• add catching of immediate callback errors

0.3.2 / 2013-03-15

• remove Emitter call in constructor

0.3.1 / 2013-03-13

• add Emitter() mixin for client. Closes #8

0.3.0 / 2013-03-13

• add component.json
• add result example
• add .concurrency support
• add concurrency example
• add parallel example

0.2.1 / 2012-11-08

• add .start, .end, and .duration properties
• change dependencies to devDependencies

0.2.0 / 2012-10-04

• add progress events. Closes #5 (BREAKING CHANGE)

0.1.1 / 2012-07-03

• change "complete" event to "progress"

0.1.0 / 2012-07-03

• add Emitter inheritance and emit "complete" [burcu]

0.0.3 / 2012-06-02

• Callback results should be in the order of the queued functions.

0.0.2 / 2012-02-12

• any node

0.0.1 / 2010-01-03

• Initial release