An incomplete list of talks I have given or I am preparing

Six Years of Ruby Performance: A History

Title Slide Ruby keeps getting faster. And people keep asking, "but how fast is it for Rails?" Rails makes a great way to measure Ruby's speed, and how Ruby has changed version-by-version. Let's look at six years of performance graphs for apps big and small. How fast is 2.6.0? With JIT? How close is Ruby 3x3?

Faster Apps, No Memory Thrash

Title Slide "The Ruby memory system can be tricky. Configuring it isn't easy. I'll show you a new simple tool to optimize your Ruby binary's memory settings. You'll learn about the CRuby memory resources and how you check them. Let's optimize your memory usage to keep memory small and keep garbage collection fast."

How Close is Ruby 3x3 for Production Web Apps?

Title Slide "How much faster is current Ruby than Ruby 2.0 for a production web application? Let's look at a mixed workload in the real commercial Discourse forum software. We'll see how the speed has changed overall. We'll also examine slow requests, garbage collection, warmup iterations and more. You'll see how to use this benchmark to test your own Ruby optimizations."

Ruby Web App Architecture

Title Slide What does an HTTP request go through on the way to your Ruby app? What processes are involved? What does each piece do?

Toronto Ruby Brigade: The Littlest ORM and More

Title Slide A presentation to the Toronto Ruby Brigade of The Littlest ORM, the Five-Minute Ruby Framework and Just Build Your App on Rack.

The Littlest ORM

Title Slide "Ever wonder how Sequel, ActiveRecord or DataMapper work? Let's build a working mini-ORM, complete with an application and tests! Ruby makes it surprisingly easy. We'll go over all the code in 30 minutes. There will be a GitHub link so you don't have to type furiously."

Hastur: Open-Source Scalable Metrics with Cassandra

Title Slide "How much faster is current Ruby than Ruby 2.0 for a production web application? Let's look at a mixed workload in the real commercial Discourse forum software. We'll see how the speed has changed overall. We'll also examine slow requests, garbage collection, warmup iterations and more. You'll see how to use this benchmark to test your own Ruby optimizations."

Replacing Java Incrementally with JRuby

Title Slide At OnSite Manager, Inc, we took an old established Java application and added JRuby and Ruby on Rails "on top" of the existing application as new and replacement views and subsections of the application. In this talk, I discuss the approaches we used for this work.