Latest Screencasts (page 2)

Use JavaScript to allow dynamic content in a page cache. In this episode I show you how to insert the user-specific content into a page through JavaScript.

One way to measure the scalability of your Rails application is to use Load Testing. This is the first of two screencasts where we attempt to give an introduction to load testing and show how to use two of the most basic Load Testing tools, Apache Bench and httperf.

This is the second of two episodes where we learn the basics of Load Testing our web applications. In this episode we take a look at autobench, a tool that automates our httperf load tests, then we’ll figure out how to visualize our httperf results in a graph, and finally take a brief look at a few other Load Testing tools you might want to get familiar with.

Metric Fu is a compilation of several tools to help find areas of code that could be improved. In this episode I show you how to setup this tool on the railscasts.com source code.

Nick Zadrozny takes us on a tour of basic website performance optimization, covering 13 optimizations you shouldn't deploy your site without. He'll also go over some sample implementations for a typical Rails app, including a demo of how to serve your public assets from Amazon's new CloudFront CDN.

Ever want to know what Rails is doing under the hood during a request? In this episode I show three different profiling tools: New Relic RPM, FiveRuns TuneUp, and Rack::Bug.

JavaScript is essential in the creation of powerful web sites and applications. In Practical and Effective JavaScript, instructor Joe Marini presents the next level of features that experienced developers need to streamline their workflows and introduce dynamic new functions to their projects. Joe teaches tips for improving JavaScript performance, ways...

Once you have a firm grasp of the 3 header tags we talked about in the previous episode (max-age, etags, and last_modified) you can start to take advantage of reverse proxy caches. In this episode we let you know exactly what a proxy cache is, and how you might use it to effectively scale a dynamic website to millions of users.

Once you’ve done all the server side caching you can possibly do, you might want to take a look back at the client side of things to do some advanced client-side caching.  In this episode we’ll show how to effectively use the max-age, etag, and last_modified helpers to scale your application.

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.