There are three ways to include modules in Ruby: include, extend and prepend. While first two are commonly used everywhere, but we don’t see prepend used often. Actually, I can’t remember any case in my career where I’ve seen that method. I’ve been interviewing many people recently and even on…

Sometimes, when we need to connect a number of services, using API is not enough. For example, if we need to stream messages to many services and ability to scale without worry even when other services are down. Apache Kafka is an open-source distributed event streaming platform, that allows to…

Angular JS is designed to operate as a full stack frontend framework, but sometimes we may need to embed some JS component with complicated logic into existing pages. Usually, React or Vue are considered better choices for that, because it’s easier to embed them due to their modular nature. …

Frontend development with modern JS framework is usually done using dev-server. With it, we don’t have to compile JS each time and after saving code changes, it happens automatically and page is refreshed with changes reflected. But to be able to use it, we have to run a dev-server on…

Grape is a REST-like API framework for Ruby that can be integrated with frameworks like Rails or Sinatra, that provides rich DSL for creating JSON API. One problem of using Grape, that I faced in my project, is that it’s basically not connected to Rails and doesn’t inherit from ActionController…

Programming Fibonacci sequence is a famous task, often used for job interviews. Algorithm looks easy, but there are few conditions where we will have to go deeper. Let’s first create project. If you have Rust installed, you can start with: cargo new fibonacci That will create a directory, called ‘fibonacci’…