AppSignal Blog

AppSignal APM combines performance monitoring and error tracking in one clear interface. For Ruby (on Rails), Elixir and Node.js.

What's New in Node.js 24
JavaScript

What's New in Node.js 24

Let's see what's worth getting excited about in the Node.js 24 release.

By Damilola Olatunji on

An Introduction to Solid Queue for Ruby on Rails
Ruby

An Introduction to Solid Queue for Ruby on Rails

In this two-part series, we'll dig deep into Solid Queue's internals, discover what makes it unique, and learn more about why it was created in the first place.

By Hans-Jörg Schnedlitz on

Migrating A JavaScript Project from Prettier and ESLint to BiomeJS
JavaScript

Migrating A JavaScript Project from Prettier and ESLint to BiomeJS

We'll introduce the BiomeJS project, set it up in a project, and help you decide if you should migrate from Prettier or ESLint to Biome.

By Damilola Olatunji on

AppSignal Closes $22 Million Growth Investment
AppSignal

AppSignal Closes $22 Million Growth Investment

AppSignal closes a $22 million growth investment led by Elsewhere Partners, enabling us to take AppSignal to the next level.

By Roy Tomeij, Thijs Cadier, Wes Oudshoorn on

Using JWTs in Python Flask REST Framework
Python

Using JWTs in Python Flask REST Framework

We'll build a JWT-based authentication system by creating a to-do list API using Flask.

By Federico Trotta on

How To Write Unit Tests in Node.js Using Mocha
JavaScript

How To Write Unit Tests in Node.js Using Mocha

Mocha has emerged as one of the most popular choices for unit testing in Node.js. Let's see it in action.

By Antonello Zanini on

An Introduction to JavaScript Bundler Rspack
JavaScript

An Introduction to JavaScript Bundler Rspack

Let's explore what Rspack brings to the JavaScript ecosystem, its key offerings, and how to use Rspack to create a React project.

By Antonello Zanini on

Pre-build a Secure Authentication Layer with Authentication Zero for Ruby on Rails
Ruby

Pre-build a Secure Authentication Layer with Authentication Zero for Ruby on Rails

Let's build a configurable generator that equips your Ruby on Rails app with an authentication scaffold.

By Thomas Riboulet on

Instrumenting Redis in Python with AppSignal
Python

Instrumenting Redis in Python with AppSignal

Let's instrument Redis in a Python application using AppSignal.

By Camilo Reyes on

An Introduction to Testing in Python Flask
Python

An Introduction to Testing in Python Flask

Let's uncover why testing is important for Flask applications and how you can effectively implement tests.

By Federico Trotta on

Advanced Dialyzer Usage in Elixir: Types and Troubleshooting
Elixir

Advanced Dialyzer Usage in Elixir: Types and Troubleshooting

In the second part of this two-part series, we'll look at more advanced Dialyzer use cases.

By Pulkit Goyal on

Prevent Silent Failures and Monitor Any Process with AppSignal Wrap
AppSignal

Prevent Silent Failures and Monitor Any Process with AppSignal Wrap

AppSignal Wrap helps you track the health and status of background processes and errors, detect silent failures, and eliminate monitoring blind spots in your application.

By Connor James on

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AppSignal provides insights for Ruby, Rails, Elixir, Phoenix, Node.js, Express and many other frameworks and libraries. We are located in beautiful Amsterdam. We love stroopwafels. If you do too, let us know. We might send you some!

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