While working in Elixir I needed to generate a random number and to my surprise could not find an easy way to do so without using Erlang (at first - see below). That lead me to learning a few interesting things about random seeds, how to create secure ones and how Erlang handles random.
Building upon the the first version of Gatling. We're adding functionality to handle event hooks for each action in the deployment process
While working on the Websocket Shootout, I frequently needed to connect to a websocket server and interact directly. None of the existing tools I...
I love using Danger to automate routine Pull Request feedback and so I made a plugin that lints commit messages. It was an interesting process and...
When a web application has a requirement for real time bidirectional communication, websockets are the natural choice. But what tools should be used to build a websocket server? Performance is important, but so is the development process. A performance benchmark alone is not enough. We also need to consider the ease of development. This shootout compares a simple websocket server implemented idiomatically in Clojure, C++, Elixir, Go, NodeJS,...
A lot of clients come to Hashrocket with an existing mobile app and they expect us to deliver new features as soon as possible. With an easy integration, native performance, support for the main platforms and great development experience, React Native has proved to be the right choice for maintaining existing mobile apps.
This blog post describes some of the tips and tricks that we face when we integrate React Native with existing apps. The...
Walk through why and how I created Gatling- A deployment tool for Phoenix applications.
Rails provides before and after actions in controllers as an easy way to call methods before or after executing controller actions as response to route requests. Action Callbacks can be particularly helpful when implementing authentication/authorization for example, and are heavily used by gems such as Devise.
Unfortunately this feature can be awfully painful to debug. With many callbacks affecting your controllers this can be a rather arduous...
When writing code that relies heavily on the results of external API calls, we need to be thinking about how we're going to test how our program reacts to different responses. Making an actual request would make our test suite extremely slow, so this is a good time to mock our responses.