zmq

node-zeromq

ØMQ bindings for node.js.

Installation

Install zmq package first.

$ npm install zmq

Example

producer.js:

var zmq = require('zmq')
  , sock = zmq.socket('push');

sock.bindSync('tcp://127.0.0.1:3000');
console.log('Producer bound to port 3000');

setInterval(function(){
  console.log('sending work');
  sock.send('some work');
}, 500);

worker.js:

var zmq = require('zmq')
  , sock = zmq.socket('pull');

sock.connect('tcp://127.0.0.1:3000');
console.log('Worker connected to port 3000');

sock.on('message', function(msg){
  console.log('work: %s', msg.toString());
});

Running tests

Install dev deps:

 $ npm install

Build:

 $ make

Test:

 $ make test

Running benchmarks

Benchmarks are available in the perf directory, and have been implemented according to the zmq documentation: How to run performance tests

In the following examples, the arguments are respectively:

• the host to connect to/bind on
• message size (in bytes)
• message count

You can run a latency benchmark by running these two commands in two separate shells:

node ./local_lat.js tcp://127.0.0.1:5555 1 100000

node ./remote_lat.js tcp://127.0.0.1:5555 1 100000

And you can run throughput tests by running these two commands in two separate shells:

node ./local_thr.js tcp://127.0.0.1:5555 1 100000

node ./remote_thr.js tcp://127.0.0.1:5555 1 100000