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By Vince Power
Look, if you're starting a new Java web project in 2026, you should probably just use Spring Boot. With 14.7% usage in the 2025 Stack Overflow Developer Survey and a 53.7% admiration score among all web frameworks, it remains the default choice for modern Java web development. It has the largest ecosystem, best documentation, most active community, and strongest cloud-native support—now enhanced with built-in AI capabilities through Spring AI.
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By Rollbar
Production errors are every developer's nightmare. You're enjoying your coffee when suddenly alerts start firing - users are experiencing crashes, and you need to find and fix the issue fast. Today, we'll walk you through how to use AI to diagnose and fix critical errors in an application using Rollbar's MCP (Model Context Protocol) server.
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By Rollbar
Remember when debugging user issues meant asking them "can you tell me exactly what you were doing?" and getting responses like "I clicked the thing and it went whoosh"? Those dark days are behind us thanks to session replay tools, which are like having a super-powered security camera for your app. Let's look at some of the top players in this space and see how they're helping developers turn "works on my machine" into "works on every machine.".
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By Rollbar
Open any professional Python codebase—Django, Flask, pandas, requests—and you'll see a constructor pattern that appears nowhere in beginner tutorials. It's not complicated, it's not magic, but it makes a huge difference in code quality. I'm going to walk you through the standard Python constructor, init, and then reveal a powerful pattern that lets you create multiple constructors for a single class.
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By Rollbar
InvocationTargetException is a confusing error message that Java developers often encounter. The good news? It's not the real problem - it's just Java's way of saying "something went wrong inside a method I tried to run for you." Think of it like a delivery person telling you "I couldn't deliver your package because there was a problem at the destination." The InvocationTargetException is the delivery person's message, but the real issue is what happened at the destination (inside your actual method).
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By Rollbar
Ruby has a robust error handling mechanism called rescue. The way it works is the keyword rescue specifies an exception handler that will catch and handle any exceptions that are raised in the begin block, the code block preceding the rescue block that may cause an exception. Here’s how it looks: When an exception occurs in the begin code block, Ruby transfers control to the rescue block and executes the code within it.
When Java operations hit their time limits, they throw java.util.concurrent.TimeoutException. This checked exception appears in scenarios ranging from thread synchronization barriers that never complete to Selenium tests waiting for elements that never appear. The challenge isn't just catching these exceptions—it's designing your code to handle timing constraints intelligently.
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By Rollbar
Assertion errors in Java are like your code's internal alarm system. When an AssertionError goes off, it signals that a fundamental assumption you made about your program's state is no longer true. It's your code telling you, “Hey, this isn't supposed to happen!" Unlike exceptions that might handle predictable runtime issues (like a file not found), an AssertionError specifically flags a breakdown in your code's internal logic or design assumptions.
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By Rollbar
Java throws an UnsupportedOperationException when you attempt to modify an object that was designed to be viewed but not changed. Think of UnsupportedOperationException as trying to open a door with the wrong key. The door exists and looks like any other door, but your particular key (or operation) simply isn't compatible with its lock.
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By Rollbar
Application Performance Monitoring (APM) tools are software platforms that help developers, DevOps engineers, and technical managers track the performance and health of their apps and infrastructure in real time. They collect telemetry data like response times, error rates, resource usage, and user behavior, visualize this data, and make it easier to detect performance issues, pinpoint root causes, and ensure a smooth user experience. In short, they help teams be proactive rather than reactive.
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By Rollbar
Nick integrates Rollbar into a brand new Nestjs backend application. There's a bit of trouble getting rolling, and Nick's computer doesn't completely cooperate, but hey, he got it done!
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By Rollbar
Leverage Rollbar's People tracking feature and get additional visibility over which of your users are affected by each error, the history of errors experienced by a particular person, as well as the list of all people who have ever experienced an error. Rollbar is the leading continuous code improvement platform that proactively discovers, predicts, and remediates errors with real-time AI-assisted workflows. With Rollbar, developers continually improve their code and constantly innovate rather than spending time monitoring, investigating, and debugging.
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By Rollbar
Telemetry allows you to view a 'breadcrumb' of events leading up to an exception directly in the Item details view. Telemetry is currently available in the Javascript, iOS, .NET, and Node.js SDKs. (and more to come!) Rollbar is the leading continuous code improvement platform that proactively discovers, predicts, and remediates errors with real-time AI-assisted workflows. With Rollbar, developers continually improve their code and constantly innovate rather than spending time monitoring, investigating, and debugging.
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By Rollbar
Simplify your error management workflow and configure Rollbar to automatically resolve items on deploy, or set an inactivity timer to resolve items if they have not occurred in a certain number of days. Rollbar is the leading continuous code improvement platform that proactively discovers, predicts, and remediates errors with real-time AI-assisted workflows. With Rollbar, developers continually improve their code and constantly innovate rather than spending time monitoring, investigating, and debugging.
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By Rollbar
Control the state and priority level of your incoming items, and learn how you can quickly act upon them via Slack! Rollbar is the leading continuous code improvement platform that proactively discovers, predicts, and remediates errors with real-time AI-assisted workflows. With Rollbar, developers continually improve their code and constantly innovate rather than spending time monitoring, investigating, and debugging.
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By Rollbar
Rollbar is employed for a number of use cases, but the first and foremost of these is monitoring your code in production. In this installment of the solutions video series, you will learn how different Rollbar features enhance your ability to monitor and improve the customer experience for all users.
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By Rollbar
Rollbar is the leading continuous code improvement platform that proactively discovers, predicts, and remediates errors with real-time AI-assisted workflows. With Rollbar, developers continually improve their code and constantly innovate rather than spending time monitoring, investigating, and debugging.
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By Rollbar
The latest video in the Rollbar Solutions series, Low-Risk Releases, shows how Rollbar can be used to improve the release process for DevOps teams. Traditionally, releasing software has been a pain point for these teams; code changes made to higher environments provide opportunities for bugs to rear their ugly heads and affect customers directly. Rollbar's real-time monitoring and intelligence solutions help you find and fix these issues more quickly and effectively, reducing MTTA/MTTR metrics and thus the overall customer impact of these issues.
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By Rollbar
Learn how to link to log data in AWS CloudWatch from Rollbar to help you quickly understand the root cause of an error. Rollbar is the leading continuous code improvement platform that proactively discovers, predicts, and remediates errors with real-time AI-assisted workflows. With Rollbar, developers continually improve their code and constantly innovate rather than spending time monitoring, investigating, and debugging.
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By Rollbar
Configure your Django project with Rollbar easily! Rollbar is the leading continuous code improvement platform that proactively discovers, predicts, and remediates errors with real-time AI-assisted workflows. With Rollbar, developers continually improve their code and constantly innovate rather than spending time monitoring, investigating, and debugging.
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Rollbar provides real-time error monitoring, alerting, and analytics for software developers. It collects and analyzes errors in web and server applications, so developers can find and fix them faster. Rollbar's live feed is used to detect errors and exceptions in real-time, especially useful immediately after deploys.
Use Rollbar to:
- Get live, granular, and contextual application error data
- Perform real-time root cause analysis on production errors
- Share a common monitoring diagnostic tool across Dev and Ops
Catch errors before your users do. Resolve errors in minutes, and deploy with confidence.