15 Oct '15, 12pm

How to Measure Ruby App Performance with New Relic

How to Measure Ruby App Performance with New Relic

Application settings, like code reloading Rails and most other Ruby web frameworks reload (almost) all of your application code on every request to pick up on changes you've made to files. That's a pretty slow process. In addition, there a lot of subtle differences between apps in development and production modes, especially surrounding asset pipelines. Simpler frameworks may not have these behaviors, but don't kid yourself - if anything in your app is changing in response to "RACK_ENV", you could be introducing performance problems that you can't catch in development. Caching behavior Rails disables caching in development mode by default. Obviously, turning that on has a big performance impact in production. In addition, caches in development work differently than caches in production, mostly due to the introduction of network latency. Even 10ms of network latency between...

Full article: http://www.nateberkopec.com/2015/10/15/ruby-app-performan...

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