Ruby On Rails

Tutorials

How Sidekiq works

How Sidekiq works Have you ever wondered how Sidekiq works and what happen from the moment you queue the worker and the moment it is executed? I did. I checked step by step the whole process. Meanwhile I explored many useful Redis features and saw how, one of my fa...

Effective Debugging of Memory Leaks in Ruby

Effective Debugging of Memory Leaks in Ruby Recently at work I was tasked with finding a memory leak in a legacy Ruby application I was unfamiliar with. We had been monitoring the application’s memory usage for several weeks and it was clear that there was a slow memory leak somewhere in th...

Completely Remove Ruby 2.7's Default Bundler

Completely Remove Ruby 2.7's Default Bundler Ruby 2.7 comes with the default bundler gem, which always has 2.0 version. This is a great default in general, especially to the beginners. But in some cases, like when using Rails 4, we want to keep the bundler version under 2.0 to avoid conflicts.

How to translate and localize apps with Rails Internationalization (18n) (Example) | GoRails

How to translate and localize apps with Rails Internationalization (18n) (Example) | GoRails Translating and localizing your app is important to make it accessible to users around the world. Rails provides internationalization (I18n) tools to make this easier and it's got a lot of cool tricks available.

Creating unlogged (PostgreSQL) tables in Rails

Creating unlogged (PostgreSQL) tables in Rails One of the most important aspects of a relational database is durability. The database has to make certain guarantees which add overhead to the database system. But what if you want to give up on the durability aspect and increase the speed instea...

2 ways to test Rails log messages with RSpec

2 ways to test Rails log messages with RSpec One thing about writing about Rails for as long as I have is, sometimes I search online to see how to do something, and a post I wrote about it shows up in the first few results! Yet another reason to blog what you learn–you might forget it someda...

Understanding and Implementing OAuth2 in Ruby

Understanding and Implementing OAuth2 in Ruby Let me know if this feels familiar. Your users want to "login with GitHub," so you install a gem, follow the setup instructions, then pray it never needs maintenance because you have no real idea how OAuth2 works. Let's fix that. In this article, ...

Ruby One Time Password library

Ruby One Time Password library A ruby library for generating and validating one time passwords (HOTP & TOTP) according to RFC 4226 and RFC 6238. ROTP is compatible with Google Authenticator available for Android and iPhone and any other TOTP based implementations. Many websit...

Idiosyncratic Ruby: Assignments In-Style

Idiosyncratic Ruby: Assignments In-Style The introduction of pattern matching in Ruby 2.7 brought us a new style of multi-assigning local variables: The pattern assignment, or, how you could also call it, the assignment in-style.After you have deactivated the warnings for experimental fe...

How to Improve ActiveRecord Performance with Subquery Caching

How to Improve ActiveRecord Performance with Subquery Caching Slow database queries are a common performance bottleneck for Ruby on Rails apps. Simplifying a complex query is often not possible due to the underlying business logic. Instead, you can extract parts of a query, cache and reuse them to improve pe...

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