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Cache Digests
The cache_digests gem (also included in Rails 4) will automatically add a digest to the fragment cache key based on the template. If a template changes the cache will auto-expire. But watch out for the gotchas!
(7 minutes)
Rails Metal
Rails Metal is a way to bypass the standard Rails request process for a performance boost. In this episode you will learn how to shave off a few milliseconds using Metal.
(9 minutes)
Client-Side Performance
Optimizing Rails performance can only take you so far. The client-side plays a big part in how fast a page feels. Here I show many tools that can help make your apps faster than ever.
(14 minutes)
Autocomplete Search Terms
Learn how to add autocompletion to a search form and improve performance using Rack middleware, caching and switching from SQL to Redis.
(17 minutes)
Charts & Graphs (revised)
If you have a lot of data, consider adding a graph to provide an overview of it. Here I show how to use Morris.js to chart an Order model and visualize trends in the data.
(12 minutes)
MiniProfiler
MiniProfiler allows you to see the speed of a request conveniently on the page. It also shows the SQL queries performed and allows you to profile a specific block of code.
(9 minutes)
JRuby Basics
JRuby is a polished and stable Ruby implementation. Here I show the basics of setting it up and executing Java from within Ruby. I also see how it compares with MRI at running threads.
(10 minutes)
Zero-Downtime Deployment
Here I show how to accomplish zero-downtime deployment using Unicorn. I also cover gotchas when working with migrations and how to put up a maintenance page when you do need to take down the site.
(12 minutes)
Bullet
Bullet will notify you of database queries that can potentially be improved through eager loading or counter cache column. A variety of notification alerts are supported.
(6 minutes)
Fragment Caching (revised)
If you need to cache a certain section of a page instead of the entire page, fragment caching is the way to go. Learn how caching is stored, how to create auto expiring caches, and more.
(9 minutes)