Erki Esken erkiesken

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.

FWIW: I (@rondy) am not the creator of the content shared here, which is an excerpt from Edmond Lau's book. I simply copied and pasted it from another location and saved it as a personal note, before it gained popularity on news.ycombinator.com. Unfortunately, I cannot recall the exact origin of the original source, nor was I able to find the author's name, so I am can't provide the appropriate credits.

Effective Engineer - Notes

By Edmond Lau
Highly Recommended 👍
http://www.theeffectiveengineer.com/

What's an Effective Engineer?

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coryhouse/react-slingshot React + Redux starter kit / boile

How to setup Let's Encrypt for Nginx on Ubuntu 18.04 (including IPv6, HTTP/2 and A+ SLL rating)

Virtual hosts

Let's say you want to host domains first.com and second.com.

Create folders for their files:



	export interface IUID {
	generate(): string;
	timestamp(uid: string, asDate?: boolean): number \| Date;
	}

	/**
	* SEE --> https://gist.github.com/mikelehen/3596a30bd69384624c11
	*

	#!/usr/bin/env python

	from datetime import datetime as dt
	from datetime import timedelta as td
	from calendar import monthrange
	import calendar

	def make_bar(r):
	return (int(round(r/10))"").ljust(10,'O')

	global
	log /dev/log local0
	log /dev/log local1 notice
	chroot /var/lib/haproxy
	stats socket /run/haproxy/admin.sock mode 660 level admin
	stats timeout 30s
	user haproxy
	group haproxy
	daemon
	maxconn 2048

	local usbWatcher = nil

	-- This is our usbWatcher function
	-- lock when yubikey is removed
	function usbDeviceCallback(data)
	-- this line will let you know the name of each usb device you connect, useful for the string match below
	hs.notify.show("USB", "You just connected", data["productName"])
	-- Replace "Yubikey" with the name of the usb device you want to use.
	if string.match(data["productName"], "Yubikey") then
	if (data["eventType"] == "added") then

	# heka.toml
	[hekad]
	base_dir = '/tmp/heka'

	[boot]
	type = "LogstreamerInput"
	log_directory = '/var/log'
	file_match = 'boot\.log'

	[pulse]