a basic queue with concurrency


var Queue = require('basic-queue');
var q = new Queue(request, concurrency / numWorkers);
function request() {

q = Queue(callback, concurrency)

callback is the function that this queue runs. Concurrency is how many simultaneous jobs should run of that function. callback will receive object and callback as arguments. If callback is a call with an error as a first argument, the queue will emit an error event.


Tell the queue to start a new job if it isn't over the concurrency limit.