ptarjan

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.

garybernhardt

(Chapters marked with * are already written. This gets reorganized constantly
and 10 or so written chapters that I'm on the fence about aren't listed.)

Programmer Epistemology
  * Dispersed Cost vs. Reduced Cost
  * Verificationist Fallacy
  * Mistake Metastasis
  The Overton Window
  Epicycles All The Way Down
  The Hyperspace Gates Were Just There

selenamarie

Ideal Postgres environment

Documentation

• Documented replication topology
• Documented network topology
• Documented interface topology - including users, passwords, connection estimates, load balancers, connection proxies
• Documented procedure, schedule for failover and testing
• Documented procedure, schedule for disaster recovery and testing

mattetti

# Hack to change the Rails cookie serializer from Marshal to JSON and therefore allow the session
# to be shared between different languages but also avoid that someone knowing the
# cookie secret key could execute arbitrary code on the server by unmarshalling
# modified Ruby code added to the session/permanent cookie.
#
# Note that all users will beed to login again since both the remember me cookie and the session cookies
# won't be valid. Note also that the remember me cookie is tested multiple times per request even when it fails.
# for performance reasons you might want to delete it if these extra cycles are too costly for you.
#
# Rails 4 (not tested on Rails 3).

tenderlove

diff --git a/probes.d b/probes.d
index dd7a7bf..e077bd8 100644
--- a/probes.d
+++ b/probes.d
@@ -214,6 +214,16 @@ provider ruby {
      Fired at the end of a sweep phase.
   */
   probe gc__sweep__end();
+
+  /*

jonah-williams

test:
  override:
    - bundle exec rspec spec

deployment:
  acceptance:
    branch: master
    commands:
      - ./script/heroku_deploy.sh <ACCEPTANCE_HEROKU_APP>:
          timeout: 300

adamwiggins

Make it real

Ideas are cheap. Make a prototype, sketch a CLI session, draw a wireframe. Discuss around concrete examples, not hand-waving abstractions. Don't say you did something, provide a URL that proves it.

Ship it

Nothing is real until it's being used by a real user. This doesn't mean you make a prototype in the morning and blog about it in the evening. It means you find one person you believe your product will help and try to get them to use it.

Do it with style

ejholmes

source :rubygems

gem 'sinatra', '~> 1.3.3'
gem 'json', '~> 1.7.5'
gem 'restforce', '~> 1.0.5'
gem 'thin', '~> 1.5.0'

group :development do
  gem 'shotgun', '~> 0.9'
  gem 'tunnels', '~> 1.2.2'

juanje

This is a little trick I use to spin up the packages instalation on Debian/Ubuntu boxes in Vagrant.

I add a simple function that checks if a directory named something similar to ~/.vagrant.d/cache/apt/opscode-ubuntu-12.04/partial (it may have another path in Windows or MacOS) and create the directory if it doesn't already exist.

def local_cache(basebox_name)
  cache_dir = Vagrant::Environment.new.home_path.join('cache', 'apt', basebox_name)
  partial_dir = cache_dir.join('partial')
  partial_dir.mkdir unless partial_dir.exist?
 cache_dir

hoffrocket

/**
* jquery plugin to replace emoji utf-8 characters with the iPhone glyphs.
* code adapted from here: https://github.com/konstantinov/jQuery.emoji
*
* Get your glyphs here:
* wget http://pukupi.com/post/1964/ -O - | perl -ne '/(e\d{3}.png)/ && print "http://pukupi.com/media/emoji/$1\n"' | xargs wget
* 
* someone (Apple?) probably has copyright on the glyphs, not sure about reuse rules.
*/
$.fn.emoji = function() {