Ruby On Rails

Tutorials

Instance Variable Performance

Instance Variable Performance This code defines a class that sets a bunch of instance variables, but the order that the instance variables are set depends on the parameter passed in to the constructor. When we pass true, it defines instance variables “a” through “zz”, and when...

Level Up Your Ruby Skillz: Writing Compact Code

Level Up Your Ruby Skillz: Writing Compact Code We have all been there, we issue a Pull Request(PR) that we feel is super tight and awesome. It gets stamped "Approved", but there is a catch. Our code isn't actually as tight as we thought. We open up our PR to a bunch of very nice suggestions on...

Switching From Resque to Sidekiq

Switching From Resque to Sidekiq A year ago at Kenna, we had our background processing jobs split between Sidekiq and Resque. We had our long-running jobs in Resque which could handle rolling restarts every time we deployed so we didn't have to worry about long running jobs getti...

Ludicrously Fast Page Loads - A Guide for Full-Stack Devs

Ludicrously Fast Page Loads - A Guide for Full-Stack Devs Server response times, while easy to track and instrument, are ultimately a meaningless performance metric from an end-user perspective. Actual end-user response to the word ‘microservices’ End-users don’t care how fast your super-turbocharged bar...

Hacking Your Webpage's Head Tags for Speed and Profit

Hacking Your Webpage's Head Tags for Speed and Profit Most of us developers settle for page load times somewhere between 3 and 7 seconds. We open up the graph in NewRelic or webpagetest.org, sigh, and then go back to implementing that new feature that the marketing people absolutely must have deploye...

rack-mini-profiler - the Secret Weapon of Ruby and Rails Speed

rack-mini-profiler - the Secret Weapon of Ruby and Rails Speed rack-mini-profiler is a powerful Swiss army knife for Rack app performance. Measure SQL queries, memory allocation and CPU time.rack-mini-profiler is a a performance tool for Rack applications, maintained by the talented @samsaffron. rack-mini-pro...

100ms to Glass with Rails and Turbolinks

100ms to Glass with Rails and Turbolinks A perceived benefit of a client-side JS framework is the responsiveness of its interface - updates to the UI are instantaneous. A large amount of application logic (and, usually, state) lives on the client, instead of on the server. The client-sid...

Secrets to Speedy Ruby Apps On Heroku

Secrets to Speedy Ruby Apps On Heroku I’ve seen a lot of slow Ruby web apps. Sometimes, it feels like my entire consulting career has been a slow accumulation of downward-sloping New Relic graphs.Why is the case? If you read that bastion of intellectual thought, Hacker News, you’d thi...

How Changing WebFonts Made Rubygems.org 10x Faster

How Changing WebFonts Made Rubygems.org 10x Faster I’m passionate about fast websites. That’s a corny thing to say, I realize - it’s something you’d probably read on a resume, next to a description of how “detail-oriented” and “dedicated” I am. But really, I love the web. The openness of the Web h...

How to Measure Ruby App Performance with New Relic

How to Measure Ruby App Performance with New Relic New Relic is a great tool for getting the overview of the performance bottlenecks of a Ruby application. But it's pretty extensive - where do you start?It’s 12pm on a Monday. Your boss walks by: “The site feels…slow. I don’t know, it just does.” H...

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