What jstack Misses When Your Java Service Uses Virtual Threads
A service with virtual threads can have thousands of requests waiting while jstack shows idle carriers. How to read Thread.dump_to_file …
Debugging
One Base URL, Many Coding Agents: What an OpenAI-Compatible Gateway Looks Like From java.net.http
Somewhere in every coding agent there is an HTTP client. Claude Code, Codex, Cursor, Cline, OpenCode: strip away the terminal UI or the …
Debugging Is Invariant Discovery: What One Kafka Session Taught Us About AI Agents
Every Java team has a sentence like this one somewhere: Any operation on a TID must go through the single asynchronous path and must not let …
No Database Operations Found: What Writing a Spring Boot Analyzer Taught Me About Spring
I spent months building a static analyzer that answers one question about a Spring Boot codebase: if I change this endpoint, what does the …
1,127 viewsAI-Assisted Unused & Dead Code Removal
Why Your Codebase Is Forcing AI to Underperform, and What to Do About It Your AI coding assistant is only as good as the codebase it works …
Enabling AI Agents to Use a Real Debugger Instead of Logging
Every Java developer has been there. Something breaks, and the first instinct is to litter the code with System.out.println(">>> HERE…
Unikernel: Profiling and Troubleshooting JVM on Nanos Unikernel
Profiling a Java Application Running Inside an Unikernel with JProfiler Unikernels are often associated with minimalism and tight resource …
The Art of Performance Tuning: Why Saving 30% in the Cloud Means Nothing if Your Code Wastes 1000× More
The Hidden Cost of “Good Enough” Code A few weeks ago, Kirk Pepperdine published a fascinating performance challenge — a small Java code …
Spring AI Debugging + How to Contribute to Open Source
In this episode, I focus on continuing my journey with vector databases, integrating Pinecone, Neo4J , and Spring AI.
The slow Death of the onjcmd Debugger Feature
Learn about the rise and fall of the onjcmd Java debugger feature, from its inception to its eventual removal.