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## 0-rate-limiters.md

      
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                ptarjan
                / 0-rate-limiters.md
            
            
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              March 29, 2017 20:44
            
          
    Scaling your API with rate limiters

The following are examples of the four types rate limiters discussed in the accompanying blog post. In the examples below I've used pseudocode-like Ruby, so if you're unfamiliar with Ruby you should be able to easily translate this approach to other languages. Complete examples in Ruby are also provided later in this gist.
In most cases you'll want all these examples to be classes, but I've used simple functions here to keep the code samples brief.
Request rate limiter

This uses a basic token bucket algorithm and relies on the fact that Redis scripts execute atomically. No other operations can run between fetching the count and writing the new count.

  
## gist:5bf5686bae86b8129bee

      
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                chrissimpkins
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## video.jsx
var React = require('react');
var cx = require('classnames');
var vjs = require('video.js');
var _forEach = require('lodash/collection/forEach');
var _debounce = require('lodash/function/debounce');
var _defaults = require('lodash/object/defaults');

var DEFAULT_HEIGHT = 800;
var DEFAULT_WIDTH = 600;
var DEFAULT_ASPECT_RATIO = (9 / 16);

## nodejs-cheatsheet.js
/* *******************************************************************************************
 * THE UPDATED VERSION IS AVAILABLE AT
 * https://github.com/LeCoupa/awesome-cheatsheets
 * ******************************************************************************************* */


// 0. Synopsis.
// http://nodejs.org/api/synopsis.html

## mongoose-find-by-reference-field.js
var mongoose = require('mongoose'),

    // Load User model
    User = mongoose.model('User'),

    // Create Thing schema
    thingSchema = new mongoose.Schema({

      _user: {
        type: ObjectId,

## jQuery Change Event: Proper Binding
/*
For some reason, the change() event only fires when the input field loses focus.
Binding to other options ('change keypress paste focus textInput input') will
fire the event several times, which is bad. The below code works even when
content is pasted into the text field, and only fires once as expected.
*/
$('#search-form .term').bind('input', function(){
  console.log('this actually works');
});

## autocomplete.html

<!DOCTYPE html>
<html lang="en">
<head>
	<meta charset="utf-8">
	<title>jQuery UI Autocomplete - Custom data and display</title>
	<link rel="stylesheet" href="../../themes/base/jquery.ui.all.css">
	<script src="../../jquery-1.6.2.js"></script>
	<script src="../../ui/jquery.ui.core.js"></script>
	<script src="../../ui/jquery.ui.widget.js"></script>

## api.js
/* The API controller
   Exports 3 methods:
   * post - Creates a new thread
   * list - Returns a list of threads
   * show - Displays a thread and its posts
*/


var Thread = require('../models/thread.js');
var Post = require('../models/post.js');

## reserved_name_validator.rb
# app/validators/reserved_name_validator.rb
class ReservedNameValidator < ActiveModel::EachValidator
  RESERVED_NAMES = %w{
    about account add admin api
    app apps archive archives auth
    blog
    config connect contact create
    delete direct_messages downloads
    edit email
    faq favorites feed feeds follow followers following

## workers.rake
# Rake task to launch multiple Resque workers in development/production with simple management included

require 'resque/tasks'    # Require Resque tasks

namespace :workers do

  # = $ rake workers:start
  #
  # Launch multiple Resque workers with the Rails environment loaded,
  # so they have access to your models, etc.
	var React = require('react');
	var cx = require('classnames');
	var vjs = require('video.js');
	var _forEach = require('lodash/collection/forEach');
	var _debounce = require('lodash/function/debounce');
	var _defaults = require('lodash/object/defaults');

	var DEFAULT_HEIGHT = 800;
	var DEFAULT_WIDTH = 600;
	var DEFAULT_ASPECT_RATIO = (9 / 16);
	/* *******************************************************************************************
	* THE UPDATED VERSION IS AVAILABLE AT
	* https://github.com/LeCoupa/awesome-cheatsheets
	* ******************************************************************************************* */


	// 0. Synopsis.
	// http://nodejs.org/api/synopsis.html
	var mongoose = require('mongoose'),

	// Load User model
	User = mongoose.model('User'),

	// Create Thing schema
	thingSchema = new mongoose.Schema({

	_user: {
	type: ObjectId,
	/*
	For some reason, the change() event only fires when the input field loses focus.
	Binding to other options ('change keypress paste focus textInput input') will
	fire the event several times, which is bad. The below code works even when
	content is pasted into the text field, and only fires once as expected.
	*/
	$('#search-form .term').bind('input', function(){
	console.log('this actually works');
	});

	<!DOCTYPE html>
	<html lang="en">
	<head>
	<meta charset="utf-8">
	<title>jQuery UI Autocomplete - Custom data and display</title>
	<link rel="stylesheet" href="../../themes/base/jquery.ui.all.css">
	<script src="../../jquery-1.6.2.js"></script>
	<script src="../../ui/jquery.ui.core.js"></script>
	<script src="../../ui/jquery.ui.widget.js"></script>
	/* The API controller
	Exports 3 methods:
	* post - Creates a new thread
	* list - Returns a list of threads
	* show - Displays a thread and its posts
	*/


	var Thread = require('../models/thread.js');
	var Post = require('../models/post.js');
	# app/validators/reserved_name_validator.rb
	class ReservedNameValidator < ActiveModel::EachValidator
	RESERVED_NAMES = %w{
	about account add admin api
	app apps archive archives auth
	blog
	config connect contact create
	delete direct_messages downloads
	edit email
	faq favorites feed feeds follow followers following
	# Rake task to launch multiple Resque workers in development/production with simple management included

	require 'resque/tasks' # Require Resque tasks

	namespace :workers do

	# = $ rake workers:start
	#
	# Launch multiple Resque workers with the Rails environment loaded,
	# so they have access to your models, etc.