Rails' batteries-included approach is one of its greatest assets. No other framework makes it so effortless to get your application off the ground quickly, at least partially due to Rails' generators. If you've used Rails for any amount of time, you have come across generators. Need to create a new application? Run rails new. Need to scaffold a bunch of new models and views? Run rails generate scaffold. There are dozens more available to help you get started rapidly or streamline your workflow.

Elixir is all about performance. Say you have an app up and running with Elixir, but some parts aren't working as fast as you would like them to. That is where profiling comes in. Profiling tools usually walk you through the frequency and duration of function calls and where they spend their time. Erlang has impressive profile tooling available at its disposal. In this post, we will look into three profiling tools in Elixir: cprof, eprof, and fprof.

The Node.js team announced the release of version 18 on April 19. Node.js 18 has some significant new features that Node developers should be aware of. In this article, we'll look at some of the major highlights from this release.

Some exciting new improvements have been launched with React 18. When React 18 was announced a year ago, the team promised a gradual adoption strategy. Now, a year later, this is exactly what they've done and you can upgrade your app to the newest version. React 18 comes with a few breaking changes, depending on how you use it.

Object-oriented programming (OOP) is hard to achieve in a dynamic prototypical language like JavaScript. You have to manually stick to OOP principles because of language features like duck typing. This requires discipline, as nothing in the language enforces the principles. If a diverse team of developers with different backgrounds is involved, a codebase filled with good intentions can quickly become one chaotic mess.

Data integrity problems are among the most common database issues Rails developers face. Besides allowing for proper validation, correctly designed transaction blocks ensure that your data isn't partially created or updated. However, transactions can also harm your application — or even take down your whole database — when not properly designed. This article offers a set of good practices for working with transactions.

Thanks to HEEx and function components, LiveView provides developers with a sleek, ergonomic syntax for building and maintaining sophisticated interactive UIs. LiveView's form/1 function component is a great example of this, making it easier than ever before to render complex forms within LiveView. However, the form/1 function component can feel a little mysterious to anyone unfamiliar with LiveView's function components.

AWS Lambda has been around for a few years now, and it remains the most popular way to experiment with serverless technology. If you're not familiar with serverless, it's a model of development in which managing, provisioning, and scaling servers is abstracted away from application development. Servers do exist in a serverless world, but they are completely managed by the cloud provider, allowing developers to focus on packaging their code for deployment.

Have you ever heard someone complain about their tests being too fast? Me neither. Fast tests mean fast feedback. Whether you run them locally or in a continuous integration pipeline, the earlier your tests finish, the earlier you can react to failures and improve your code. Besides the productivity gains, it is well known that slow tests make developers grumpy. Nobody likes their developers grumpy. With all that said, creating a lightning-fast test suite isn't always as easy as you'd hope.

Keeping your dependencies up-to-date is essential to ensure that your applications stay healthy, secure, and performant. Thankfully, the BEAM ecosystem has its own package manager, Hex, which is fast, mature, and simple to use. This article explores the available tools and commands to manage Hex dependencies and some tips to make the process more enjoyable. Let's dive in!