NotSoFast

A simple promise based rate limiter.

Usage

notsofast = require('notsofast')(options);

notsofast()
    .then(function () {
        console.log('I can now do what I wanted to do!');
    })
    .catch(function () {
        console.log('Nope, no can do!');
    });

Options

• timeout (integer) - Milliseconds before unresolved promises get rejected. Defaults to 5000
• interval (integer) - Milliseconds. Interval at which new tickets are loaded. Defaults to 1000
• ticketsPerInterval (integer) - Amount of tickets that will be redeemable per interval.
• bucketSize (integer) - Amount of tickets the bucket can hold before it instantly starts rejecting promises. Defaults to ticketsPerInterval

Error predicates

NotSoFast is based on bluebird, so you can catch errors with predicates.

notsofast = require('notsofast')(options);

notsofast()
    .then(doMyTask)
    .catch(notsofast.timeoutError, function () {
        // Ticket timed out
    })
    .catch(notsofast.bucketFullError, function () {
        // Bucket is full
    })
    .catch(console.log);