Customers love fast apps. We've got tools to help us figure out how our Rails apps are performing on our development machines, but that's not what matters. It's critical that we also be able to measure how our apps are actually performing in the production environment.
That's the reason we built Skylight, and in this talk, we'll show you how we did it. We'll discuss the underlying principles Skylight uses to profile your apps across multiple production servers, and take a look at our tech stack, including Storm, Kafka, Cassandra, Rails, and Ember.js.