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Projects That Are Making Blazing Fast Ruby a Reality

Is Ruby 2.3 Faster? Date Parsing Performance

Is Ruby 2.3 Faster? Rails ERB Template Rendering Performance

Ruby Debugging Magic Cheat Sheet

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Kill Your Dependencies

Caching result sets and collection in Rails 5

Rails 5 does not halt callback chain when false is returned

Rails 5 only supports PostgreSQL 9.1+

Configuring bundler using bundle config

Action Cable and WebSockets: An in-Depth Tutorial

RSpec 3.5.0.beta1 has been released!

Stubs, Mocks and Spies in RSpec

Ember v2.3.1 Released (also v2.4.0-beta.2)

Understanding JavaScript’s async await

CSS Variables: Why Should You Care?

**Chrome 49 Beta: CSS custom properties, background sync with service workers, and new ES2015 features **

Developer Edition 46 – More memory tooling, improved @media sidebar and more

Microsoft Security Bulletin Summary for December 2015

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HTTP/2 Implementation Status

Creating a Document-Store Hybrid in Postgres 9.5

Performance Tuning Queries in PostgreSQL