Book Image

Heroku Cookbook

By : Mike Coutermarsh
Book Image

Heroku Cookbook

By: Mike Coutermarsh

Overview of this book

Heroku is a Platform as a Service that enables developers to rapidly deploy and scale their web applications. Heroku is designed for developer happiness, freeing developers from doing system administrative tasks such as configuring servers and setting up load balancers. Developers are able to focus on what they do best, building web applications, while leaving the details of deployment and scaling to the experts at Heroku. This practical guide is packed with step-by-step solutions to problems faced by every production-level web application hosted on Heroku. You'll quickly get comfortable with managing your Heroku applications from the command line and then learn everything you need to know to deploy and administer production-level web applications.

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Heroku Cookbook
Mike Coutermarsh
Nov, 2014 | 232 pages
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Table of Contents (17 chapters)
Heroku Cookbook
Heroku Cookbook
Credits
Credits
About the Author
About the Author
About the Reviewers
About the Reviewers
www.PacktPub.com
www.PacktPub.com
Preface
Preface
Free Chapter
1
Getting Started with Heroku
Getting Started with Heroku
Introduction
Installing the Heroku Toolbelt
Introducing version control with Git
Deploying a Rails application to Heroku
Deploying a Node.js application to Heroku
Introducing dynos, workers, and scaling
2
Managing Heroku from the Command Line
Managing Heroku from the Command Line
Introduction
Viewing application logs
Searching logs
Installing add-ons
Managing environment variables
Enabling the maintenance page
Managing releases and rolling back
Running one-off tasks and dynos
Managing SSH keys
Sharing and collaboration
Monitoring load average and memory usage
3
Setting Up a Staging Environment
Setting Up a Staging Environment
Introduction
Duplicating an existing application
Managing git remotes
Password protection for a Rails app
Deploying with Heroku labs – Pipeline
Deploying from tags
Continuous integration and deployment with Travis CI
4
Production-ready with Heroku
Production-ready with Heroku
Introduction
Managing domains from the command line
Configuring DNS with CloudFlare
Setting up SSL with CloudFlare
Enabling preboot for seamless deploys
Enabling custom maintenance and error pages
Setting up a status page
Setting up log draining with LogEntries
5
Error Monitoring and Logging Tools
Error Monitoring and Logging Tools
Introduction
Checking Heroku's status
Adjusting Rails's logging level
Storing historical logs with PaperTrail
Monitoring for 404 and 500 errors with PaperTrail
Logging slow queries with PaperTrail
Monitoring uptime with Pingdom
Logging errors with Rollbar
6
Load Testing a Heroku Application
Load Testing a Heroku Application
Introduction
Monitoring dyno performance with Librato
Monitoring application performance with New Relic
Learning to load test with Siege
Configuring complex load tests with Siege
Load testing from the cloud with Blitz.io
Testing real-user scenarios with Load Impact
7
Optimizing Ruby Server Performance on Heroku
Optimizing Ruby Server Performance on Heroku
Introduction
Setting up and running Unicorn on Heroku
Monitoring and tuning Unicorn's memory usage
Tuning Unicorn's backlog for Heroku
Timing out long requests with Unicorn
Setting up and running Puma on Heroku
Running Puma with Rubinius for parallelism
8
Optimizing a Rails Application on Heroku
Optimizing a Rails Application on Heroku
Introduction
Setting up a sample blogging app
Using Heroku Deflater to gzip assets
Serving assets from Amazon Web Services (AWS) Cloudfront
Adding memcached to a Rails application
Adding Redis to a Rails application
Implementing low-level caching in Rails
Caching rendered views
Aborting long requests with Rack::Timeout
Using a follower for read-only DB queries
9
Using and Administrating Heroku Postgres
Using and Administrating Heroku Postgres
Introduction
Creating and sizing a new database
Promoting a Heroku database
Connecting to Heroku Postgres from Navicat
Connecting to Heroku Postgres from psql
Creating a database backup
Restoring from a backup
Creating a read-only follower
Viewing and stopping database processes
Analyzing Heroku Postgres's performance
10
The Heroku Platform API
The Heroku Platform API
Introduction
Making our first API request with HTTPie
Getting started with the Platform API gem
Scaling dynos and workers
Managing configuration variables
Adding and removing collaborators
Creating new Heroku applications
Index
Index

About the Reviewers

Jon Ferry has been designing and developing web-based software in a variety of technologies for over 14 years. He has 5 years of experience developing production-level Ruby applications on Heroku's stack. A graduate from the Rochester Institute of Technology, he currently works as a technical lead at Dealer.com.

For more information about Jon and his projects, visit http://jonferry.com or follow him on Twitter at @jonferry.

Mads Ohm Larsen is a full-stack Ruby on Rails developer, gradually shifting to DevOps. He has, in his line of work, deployed and optimized multiple Rails, Sinatra, and Grape apps on Heroku, using multiple Rubies, including JRuby for better performance. His recent switch to DevOps has allowed him even more insight into the world of optimization.

Mwaki Harri Magotswi, raised in Nairobi, Kenya, started tinkering with computer hardware at the age of 16. This interest led him to learn computer science, and later web development, where he discovered Ruby on Rails, a framework he enjoys developing on. Most recently, he was a software engineer for a recommerce firm, Gazelle, before taking a break to continue his studies. Constantly experimenting, he is currently playing with various Ruby-based blogging platforms and JavaScript MVC frameworks when time allows.

In his free time, he enjoys reading, watching TV, playing video games, watching sports, casual bike rides, scenic drives, cars, craft beers, and the occasional 15 minutes of rugby. He is also a casual traveler, food sampler, and amateur mixologist, willing to try most things at least once.

I dedicate my work on this book to my dear late friend Sophie as well as all my family and friends who have helped me get this far.

Peter Robinett is a backend and mobile developer, with a focus on Scala and iOS development. He is a frequent user of the Heroku platform and a fan of its power and extensibility.

He is currently a developer at Lua Technologies. He also works at Bubble Foundry and blogs occasionally at www.bubblefoundry.com.

Kien Nguyen Trung is a software developer who lives in Hanoi, Vietnam. After spending years in high school learning Mathematics and achieving many rewards, he decided to challenge himself in computer science. He started learning programming from 2006 and fell in love with it.

In his free time, he builds some funny things from scratch, such as Pinterest bots to interact with Pinterest API, a Facemash clone using the Facebook avatar with face recognition, and so on. He runs a blog at http://kiennt.com to write about what he learned and his thoughts on software engineering. He spends a lot of time writing code that not only runs but is also clean and clear. His favorite quote is Any fool can write code that a computer can understand. Good programmers write code that humans can understand by Martin Fowler.

Since August 2012, he has been leading backend development at SimplePrints (http://getsimpleprints.com), a fast-growing start-up of 500 start-up companies. He refactors most of the backend source code in SimplePrints applications so that it is more readable and maintainable. Since June 2014, he has been designing architecture for both backend and iOS applications of SimplePrints. His favorite programming language is Python, but he also works on Ruby, JavaScript, and Objective-C.

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