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    generic-throttle
    TypeScript icon, indicating that this package has built-in type declarations

    3.1.0 • Public • Published

    generic-throttle

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    A lightweight, flexible promise based throttle class perfect for any rate or concurrency limiting need.

    Written in TypeScript, targets Nodejs and the Browser

    Install

    # Latest Stable Release
    $ npm install generic-throttle
    
    # Latest Commit
    $ npm install tflanagan/generic-throttle
    
    # Also available via Bower
    $ bower install generic-throttle
    

    Documentation

    TypeDoc Documentation

    Rate Limit Example

    This Throttle instance will rate limit the throttle to a maximum of 10 requests every 30 seconds. It will not throw an error if the maximum is exceeded.

    'use strict';
    
    const { Throttle } = require('generic-throttle');
    
    const throttle = new Throttle(10, 30000, false);
    
    function delay(){
    	return new Promise((resolve) => {
    		setTimeout(() => {
    			resolve();
    		}, 2000);
    	});
    }
    
    function asyncRequest(i){
    	return throttle.acquire(() => {
    		console.log('%d does some async request', i);
    
    		return delay();
    	}).then(function(){
    		console.log('%d finished', i);
    	});
    }
    
    for(let i = 0; i < 30; ++i){
    	asyncRequest(i);
    }

    Concurrency Limit Example

    This Throttle instance will limit concurrency to 5 requests at any given moment. It will not throw an error if the maximum is exceeded.

    'use strict';
    
    const { Throttle } = require('generic-throttle');
    
    const throttle = new Throttle(5);
    
    function delay(){
    	return new Promise((resolve) => {
    		setTimeout(() => {
    			resolve();
    		}, 2000);
    	});
    }
    
    function asyncRequest(i){
    	return throttle.acquire(() => {
    		console.log('%d does some async request', i);
    
    		return delay();
    	}).then(function(){
    		console.log('%d finished', i);
    	});
    }
    
    for(let i = 0; i < 30; ++i){
    	asyncRequest(i);
    }

    License

    Copyright 2014 Tristian Flanagan

    Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0
    

    Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.

    Install

    npm i generic-throttle

    DownloadsWeekly Downloads

    644

    Version

    3.1.0

    License

    Apache-2.0

    Unpacked Size

    14.2 kB

    Total Files

    5

    Last publish

    Collaborators

    • tflanagan