JavaScript

Read blog posts about building and managing your JavaScript apps. We share tips & tricks about performance optimization, monitoring, and observability.

Setting Up AppSignal for a Node.js App Running on Kubernetes
JavaScript

Setting Up AppSignal for a Node.js App Running on Kubernetes

Learn how to set up AppSignal for a Node.js app running on Kubernetes.

By Dejan Lukić on

Signal Forms in Angular: The Missing Link in Modern Reactivity
JavaScript

Signal Forms in Angular: The Missing Link in Modern Reactivity

In this article, we'll explore how Signal Forms align Angular forms with its signal-driven architecture to improve predictability, debugging, and scalability in enterprise apps.

By Sonu Kapoor on

Monitoring Express Route Performance with AppSignal
JavaScript

Monitoring Express Route Performance with AppSignal

Monitoring Express route performance involves identifying slow endpoints, understanding request behavior, and correlating latency with errors or slow queries. Learn how to set up AppSignal for Express and analyze route performance.

By Dimitrije Stamenić on

Monitoring Your Node.js App Health on Fly.io
JavaScript

Monitoring Your Node.js App Health on Fly.io

Learn how to use AppSignal to get deep, actionable visibility into your Node.js app on Fly.io.

By Tarun Singh on

Signal-Driven Error Monitoring: Detecting and Debugging Reactive Failures in Angular
JavaScript

Signal-Driven Error Monitoring: Detecting and Debugging Reactive Failures in Angular

We'll unpack how to detect invisible failures, trace signal lifecycles, and introduce lightweight instrumentation patterns in Angular Signals.

By Sonu Kapoor on

AppSignal’s Top 5 JavaScript Posts in 2025
JavaScript

AppSignal’s Top 5 JavaScript Posts in 2025

Check out the 5 JavaScript posts that really stood out on our blog in 2025.

By Ana Malinović on

Monitoring Node.js Express Application Performance with AppSignal
JavaScript

Monitoring Node.js Express Application Performance with AppSignal

Let's monitor the performance of an Express application effectively using AppSignal.

By Damilola Olatunji on

The Performance Revolution in JavaScript Tooling
JavaScript

The Performance Revolution in JavaScript Tooling

Let's explore some tools that have driven dramatic performance improvements and other innovations in the JavaScript ecosystem.

By Damilola Olatunji on

Manage a Next.js Monorepo with Prisma
JavaScript

Manage a Next.js Monorepo with Prisma

In this post, we'll fire up a Next.js monorepo with Prisma.

By Camilo Reyes on

Diving Into Reactive Programming in Node.js
JavaScript

Diving Into Reactive Programming in Node.js

We'll explore how reactive programming fits into the Node.js ecosystem.

By Antonello Zanini on

Find and Fix Fastify Slowdowns with AppSignal for Node.js
JavaScript

Find and Fix Fastify Slowdowns with AppSignal for Node.js

Let's detect performance slowdowns in Fastify and use AppSignal to fix them.

By Damilola Olatunji on

Ways to Improve Node.js Loader Performance
JavaScript

Ways to Improve Node.js Loader Performance

We'll explore how to improve your Node.js app's performance with its loader.

By Omonigho Kenneth Jimmy on

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