Core Java
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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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HTTP/3 Comes to the Java HTTP Client
What JEP 517’s QUIC-based transport actually means for your microservices, your latency, and your connection handling — explained simply. 1.…
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Fixing Java ClassCastException for Comparable Objects
This article explains why Java throws a ClassCastException when using ordered collections like TreeSet or TreeMap with objects that are…
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