4 cool less known Rails features – part 1: ActiveJob, ActiveModel, command line
I never read the whole Rails guides and now when I’m translating them to my native language I discovered some cool features that I didn’t know abo...
3 things that slow down and make your RSpec tests worse
There are a lot of things that can slow down your tests – some of them are related to your code and some not. I will focus on quick changes that...
4 ways to refactor and speed up RSpec tests
Tests are very important part of every app so it is also important to write them very well. However, sometimes is hard to keep the test suite clean an...
Ruby on Rails – your own slow query log, no sql configuration required
Reading slow query log is a great way to detect weak places in any app where you have to refactor code in order to improve performance. I used to thin...
Build your own RSpec – introduction to DSL and metaprogramming
A gentle introduction to DSL and metaprogramming in Ruby. DSL — Domain specific language is a programming technique based on language creation t...