Core Java
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The Object Allocation Tax: Why Your Java Service Is 40% GC and How the JIT’s Escape Analysis Both Helps and Misleads You
A ground-level look at how HotSpot C2 decides between scalar replacement and heap allocation, the everyday patterns that silently defeat…
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OpenRewrite: The Automated Migration Tool That’s Quietly Changing How Teams Upgrade Java
It started at Netflix, migrated the Jakarta EE TCK, and is now the dominant automation tool for Java modernization according…
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Virtual Threads One Year in Production: What Teams Got Wrong and What Actually Improved
Project Loom shipped in Java 21 in September 2023. Two-plus years of real production data — including Netflix’s deadlock post-mortem,…
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Java 21 vs Java 25 LTS: The Migration Decision Framework Teams Are Avoiding
Two LTS releases now coexist. Virtual thread pinning is fixed. Memory is down 22%. Startup is faster. The gap is…
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Building Circuit Breakers in Spring Boot with Resilience4j
In distributed systems, failures are expected. Services can become slow, unavailable, or completely unresponsive due to network issues, overload, or…
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JDK 24 Security Updates
JDK 24 introduces a range of important security enhancements aimed at strengthening Java applications against modern threats. With the rapid…
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Vector API at Eleven Incubations: Why This API Takes So Long and What’s Blocking It
JEP 529 ships in JDK 26 with no substantial changes since JDK 25. After five years and eleven rounds, the…
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The Lies Your JVM Profiler Tells You: Safepoints, Biased Sampling, and WhyYour Hotspot Analysis Is Wrong
You ran your profiler. You found the hotspot. You optimised it. Performance didn’t change. Here’s the precise technical reason why…
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Java Implementation of Frog River One
This article explains the Frog River One problem and explores different approaches to solve it, comparing their efficiency and practicality…
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