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The Complete Guide To Rails Performance



The Complete Guide to Rails Performance is a full-stack course that gives you the tools to make your Ruby on Rails applications faster and more delightful for users, scale better and for less money, and take less effort to maintain.


WHY IS YOUR RAILS APPLICATION SLOW?

It didn't start that way. Your app started as a lean, mean web machine. Customers are complaining. The Redis server is on fire, and the database ran out of memory last week.

WHEN DID YOUR PAGES START TAKING 5 SECONDS TO LOAD?

Searches bog down, your caches are bursting at the seams, and your server is constantly out of memory. 5 seconds is a lifetime. You're spending thousands per month on servers and you don't know why.

REWRITES ARE EXPENSIVE. OPTIMIZATION IS CHEAP.

Hacker News says it's because Ruby is fatally flawed. It's a slow language, doomed to fail in a land of Go, Javascript, Erlang and others. That’s BS.

Look at Shopify, Github and Basecamp. They're all Rails applications and some of the most popular websites in the world. How do these Rails applications achieve sub-100 millisecond response times at massive (dare I say, Web™) Scale? What if I told you it wasn't even that hard?

WHY IS THIS SO DIFFICULT? IS DHH SACRIFICING CHICKENS IN HIS BACKYARD?

The secret is that Rails apps aren't slow or hard to scale by default - they die a slow death by a thousand papercuts. This course is about each one of those thousand papercuts.

But you don't have a team of 30 or more experienced programmers, like Shopify, Github and Basecamp do. And let's be real - you're not DHH. Maybe you're a startup CTO with a business to run - you can't spend hundreds of hours tracking down performance bugs.

Almost every Rails application suffers from the same performance and scaling problems. This course will show you the techniques that will give you the speeding bullet of a website that your customers demand.

WHAT DOES THIS COURSE COVER?

The entire Complete Guide to Rails Performance — all strategies, checklists and screencasts — are broken into four modules to ensure that you don’t get overwhelmed. You'll easily and methodically chip away at your Rails application’s performance. The course applies to Rails 4.2 through Rails 6.0.

PROFILING & BENCHMARKING

Learn how to identify what areas are causing bottlenecks. Don’t waste time “spraying and praying”, optimizing every thing on your site. Learn how to identify what areas account for 80% of the slowdown.

FRONTEND

I cover all the performance problems you can encounter in JavaScript, HTML, and CSS. In addition, I’ll deep dive on HTTP and how the browser works, so that you will reduce your frontend load times by more than 80%.

BACKEND

We'll discuss everything in the Ruby and Rails world that can make your application slow. What gems to use, which to avoid, and how to write Ruby that's zippy quick. You'll learn about how Rails works while avoiding the common pitfalls that make Rails apps slow.

ENVIRONMENT

This is truly a full-stack book - I'll discuss asset delivery, CDNs, DNS, server hardware and more.