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Debug logging is a particular form of logging that records detailed information about how an application behaves during execution, so we can identify, understand, and fix issues. This guide will give you a rookie-to-pro guide to debug logging, showing you: By the end, you will have a clear, practical approach to using debug logs effectively in real applications.

Debugging tools have evolved from rudimentary catch-all software into specialist solutions for different languages, userbases and development stages. The best debugging strategies choose the right tool for their specific use case, and this guide will help you do that. We’ll give you the knowledge to: We’ll mention our own product in this list, but don’t worry: the content you’ll find here is impartial, comprehensive and educational, not salesy.

Rubber duck debugging allows us to discover our own coding errors by retracing our steps. Instead of relying on complex black-box tools, we simply explain our own logic until the problem reveals itself. This is one of the most straightforward debugging techniques around, and it can be easily enhanced by AI tools.

SonarQube is a code quality and security platform that helps teams detect bugs, vulnerabilities, and maintainability issues early in development, using static code analysis rather than manual reviews. SonarQube fits directly into modern workflows, integrating with CI/CD pipelines and development environments to continuously verify code through quality gates, dashboards, and automated checks. And in this guide, we’ll give you.

console.log() is a foundational tool for developers learning JavaScript. It sends messages to the browser’s DevTools console, so we can see what our code is doing at runtime. This allows us to: Because it prints information directly to the console, we can observe values, program flow, and potential issues. In this post we’re going to cover the basics of console.log() syntax, the nuances of formatting and the essential DevTools add-ons that turn console.log() from a window into a dashboard.

Mobile crash reporting tools don’t just tell us when our app’s broken down. They help us pick up the pieces and build better next time. As such they play a vital role in our quest to deliver excellent user experience, so it’s important we choose the right tool for our team, users and operating systems. In this guide, we’ll compare the best mobile crash reporting tools in 2026, including Android-focused and cross-platform solutions.

A JavaScript array allows us to group related data like product names, user IDs, log entries, cart items, or API results. Arrays play a vital role in all kinds of user functions, from shopping carts to game scores. However the sheer flexibility of JavaScript arrays can also cause mistakes around mutation, copying, sorting, and searching. Soo we’ve put together this post to show you.

The Apple Push Notification Service (APNs) allows developers to send real-time alerts and data to Apple devices. But it can create a number of problems as your app scales including silent throttling, deep link errors and push payload incompatibility. This post will help you proactively avoid these issues. You’ll learn about: This guide is intended for developers already using push notifications or planning to operate notification systems at scale.

Here’s a problem I run into constantly: something breaks in production, I can see the 500 errors in my logs, but I can’t reproduce it locally. The trace shows me the dependency graph but not the actual request that failed. This is especially painful in microservices. I was looking at a CNCF example the other day (a simple demo app, like 4 pods) and it already had so many cross-service dependencies that understanding what broke required looking at the whole system at once.

From booking flows to subscription screens, formatting dates correctly is a core requirement in almost every Android app. In this post we’ll show you how to master the specific Android date format, understand its unique features and avoid common formatting pitfalls.