AppSignal Blog

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

AppSignal’s Top 5 Elixir Posts in 2024
Elixir

AppSignal’s Top 5 Elixir Posts in 2024

It's time for our yearly rundown of our top 5 best-performing Elixir posts.

By Ana Malinović on

AppSignal’s Top 5 JavaScript Posts in 2024
JavaScript

AppSignal’s Top 5 JavaScript Posts in 2024

Check out the 5 JavaScript posts that really stood out on our blog in 2024.

By Ana Malinović on

AppSignal’s Top 5 Ruby Posts in 2024
Ruby

AppSignal’s Top 5 Ruby Posts in 2024

Let's look back at our top 5 Ruby posts this year.

By Ana Malinović on

The Top 5 New Relic Alternatives
AppSignal

The Top 5 New Relic Alternatives

Exploring alternatives to New Relic? In this post, we'll compare New Relic to its top competitors to help you choose the best monitoring tool for you.

By Connor James on

A Deep Dive Into CommonJS and ES Modules in Node.js
JavaScript

A Deep Dive Into CommonJS and ES Modules in Node.js

While CommonJS has served the Node community well, ES modules are rapidly gaining traction. Let's take a deep dive into both.

By Damilola Olatunji on

Distributed Phoenix: Deployment and Scaling
Elixir

Distributed Phoenix: Deployment and Scaling

In part one of this series, we managed distributed state using GenServers. In this part, we'll explore deployment and scaling strategies.

By Pulkit Goyal on

Find and Fix N+1 Queries in Django Using AppSignal
Python

Find and Fix N+1 Queries in Django Using AppSignal

We'll track the N+1 query problem in a Django app and fix it using AppSignal.

By Nik Tomazic on

Server-sent Events and WebSockets in Rack for Ruby
Ruby

Server-sent Events and WebSockets in Rack for Ruby

In the final part of our three-part series, we'll use server-sent events (SSEs) and WebSockets to establish a persistent connection in a Rack app.

By Ayush Newatia on

Unit Testing in Node.js With Jest
JavaScript

Unit Testing in Node.js With Jest

Jest has become one of the most popular solutions when unit testing in Node: let's see why.

By Antonello Zanini on

The Top 5 Sentry Alternatives
AppSignal

The Top 5 Sentry Alternatives

Let's compare Sentry to five competitors to help you find the best application performance monitoring solution.

By Connor James on

Avoiding False Positives in Node.js Tests
JavaScript

Avoiding False Positives in Node.js Tests

Let's examine several common false positive patterns that can crop up in Node.js test suites.

By Greg Gorlen on

Rack for Ruby: Socket Hijacking
Ruby

Rack for Ruby: Socket Hijacking

Rack is the foundation for every popular Ruby web framework in existence. In part two of this three-part series, we'll run through socket hijacking.

By Ayush Newatia 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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