Outside of the language itself, collections are the most basic building block for Java applications. How do we expose them for debugging?

Debugging Java Collections Framework Issues in Production

Rewriting apps is easy. Doing it while preserving compatibility... That's a bit hard. Doing it live in production. That's the big challenge!

Modernize Legacy Code in Production – Rebuild your Airplane Midflight without Crashing

Production is failing and everything is lost? That used to be the case. Fail whale, hysteria and panic. Developer observability fixes this!

When Disaster Strikes: Production Troubleshooting

Threading issues are a piece of cake with these simple debugger techniques. Yes, you CAN debug threads with breakpoints, when using the right type!

Debugging Deadlocks and Race Conditions

Due to their asynchronous nature and production complexities debugging messaging systems is remarkably hard... WAS remarkably hard...

Debugging the Java Message Service (JMS) API using Lightrun

RAM profiling has its strengths and weaknesses. The debugger is the perfect complementary tool that translates obtuse statistics to actionable changes

Memory Debugging and Watch Annotations

We use annotations to denote transactional behavior in modern Spring so we have no code, no failure, no debugging... But is it really?

Spring Transaction Debugging in Production with Lightrun

Scraping is a fragile discipline. As a workaround we often use a server. Debugging these issues is remarkably difficult. Or at least it was.

Debugging jsoup Java Code in Production Using Lightrun

Inspecting the data in the watch quickly is key to a fast and effective debugging session. Here's how you can see the data that's important instantly!

Debugging Collections, Streams and Watch Renderers

Where should you add logs in a method? Should you even log in this method? If so what data should you include in the log? How to phrase the message?

Logging Best Practices - MDC, Ingestion and Scale

A new issue impacting Spring Core on Java 9 and newer could be the next Log4J. Here's what I know so far (mitigation and investigation).

Spring Remote Code Execution Vulnerability

Failures in XML parsing can happen in production when the source data changes. These are notoriously hard to debug... At least until now...

Debugging JAXB Production Issues

Debugging secrets - learn how to dig deep into your apps. The hidden techniques, tricks and tools for debugging, APM and more. With a big focus on production tracing and developer oriented APM tools.

Talk to the Duck