Java Performance
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Core Java
The Hidden Cost of Records: When Java’s Immutable Data Classes Quietly Hurt Your GC
Records are clean, expressive, and widely adopted — but in tight, allocation-heavy loops, they can pile invisible pressure on the…
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Enterprise Java
Database Indexing Mistakes That Senior Java Developers Still Make in 2026: A Deep Dive With PostgreSQL and Hibernate
You’ve shipped dozens of services. You know what a B-tree is. Yet your PostgreSQL queries are still crawling at 3…
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Core Java
Reading JVM Safepoint Logs Without Going Mad: A Practical Stop-the-World Diagnosis Guide
JFR and async-profiler guides are everywhere. Safepoint logs — the raw output that tells you exactly why your JVM froze — are…
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Enterprise Java
String Deduplication Is On By Default in G1 — And Most Developers Don’t Know What It Does
A granular look at what the JVM is quietly doing with your strings at the native level, when that work…
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Core Java
The Lies Your Microbenchmarks Tell You: A JMH Field Guide for Backend Engineers
JMH is powerful, but deceptively easy to misuse. Here are the five pitfalls that silently corrupt your results — and…
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Core Java
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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Enterprise Java
The JVM Garbage Collector Decision in 2026: G1 vs ZGC vs Shenandoah for Real Workloads
ZGC and Shenandoah have both gone generational. G1 picked up meaningful JDK 25 improvements. Most teams still default to G1…
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Core Java
Gradle 9’s Configuration Cache at Scale: Why Your 200-Module Enterprise Build Is Still Slow
You turned it on. You saw the warnings. You read the docs. The cache still misses. Here’s the real taxonomy…
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Core Java
Project Leyden’s AOT Code Cache: How Java Is Solving Its Cold-Start Problem Without GraalVM
Leyden delivered its first three features in Java 24 and 25. A fourth lands in JDK 26. Here’s why this…
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