Ruby On Rails

Tutorials

Ruby on Rails: Running Tests with Guard and Docker

Ruby on Rails: Running Tests with Guard and Docker Guard is a great tool for quickly running your Rails app tests/specs as your develop the code. As you edit and change the files in your app, Guard can trigger tests specific to the files you are.

Reducing String duplication in Ruby

Reducing String duplication in Ruby It is very likely your Rails application is full of duplicate strings, here are some tricks you can use to get rid of them.

Humming along - Analyzing RubyGems stats for 2017

Humming along - Analyzing RubyGems stats for 2017 2017 was a stable year for the Ruby ecosystem. There weren't any new libraries that exploded in popularity, but work on existing gems hummed along.

emad-elsaid/rubrowser: a ruby code dependency graph interactive visualizer

emad-elsaid/rubrowser: a ruby code dependency graph interactive visualizer a visualizer for ruby code (rails or otherwise), it analyze your code and extract the modules definitions and used classes/modules and render all these information as a directed force graph using D3.

How par8o Sped up Rails CI Builds 8x with Semaphore Boosters

How par8o Sped up Rails CI Builds 8x with Semaphore Boosters This is a guest post by Kendal Miller, Senior Engineer at par8o. Read it to discover how par8o reduced build time from over 2 hours to 13 minutes with Semaphore Boosters, fully automated parallel CI for Rails.

Using GraphQL, a Ruby on Rails introduction

Using GraphQL, a Ruby on Rails introduction GraphQL has been stirring up quite a buzz ever since it was introduced by Facebook. Since then companies like Github, Shopify and Pinterest have been using it as a core part of their technology stack.

Conditional unique indexes in Rails and PostgreSQL

Conditional unique indexes in Rails and PostgreSQL This is a simple example of adding a conditional and partial unique index to Rails applications backed by PostgreSQL.To demonstrate adding a conditional unique index I will use a following User model that I want to add.

Profiler week 5: Mac support, experiments profiling memory allocations

Profiler week 5: Mac support, experiments profiling memory allocations In just-this-second news – someone tweeted at me just now that they used rbspy and it helped them find an unexpected hot spot in their program, which made me super happy!!.

Playing with ruby's new JIT: MJIT

Playing with ruby's new JIT: MJIT As the commit explains, this is still early days for JIT in MRI ruby. It’s not yet ready to make Rails faster, and it’s slower right now than some of the earlier prototypes, but it’s here.

Instrumenting Rails with Prometheus

Instrumenting Rails with Prometheus Usually people leave this type of instrumentation and graphing to NewRelic and Skylight. However, at our scale we find it extremely beneficial to have instrumentation, graphing and monitoring local cause we are in the business of hosting, this is ...

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