rate-limit

node-rate-limit

Ensure that a series of functions are called with a minimum interval between each invocation.

Installation

npm install rate-limit

Usage

Call rateLimit.createQueue(options) to create a queue, where the interval between function calls is specified in milliseconds by options.interval. Add a function to be called by calling queue.add(func).

For instance:

 
var rateLimit = require("rate-limit");
 
function getNow() {
    return new Date().getTime();
}
 
var startTime = getNow();
 
function printElapsedTime() {
    console.log(getNow() - startTime);
}
 
var queue = rateLimit.createQueue({interval: 100});
 
queue.add(printElapsedTime);
queue.add(printElapsedTime);
queue.add(printElapsedTime);
 
 
// Sample output:
// 0
// 105
// 206