Core Java
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Using Regular Expressions in Hibernate HQL
Regular expressions (Regex) are one of the most powerful ways to search and validate text, allowing developers to perform pattern…
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Understanding the Java Memory Model: Visibility, Ordering, and the Guarantees Most Developers Miss
Why the JMM is the invisible contract behind every concurrent Java program — and what breaks when you misread it.…
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Value Classes (JEP 401): When Records Aren’t Flat Enough for the JIT
How value classes differ from records — no identity, no heap header — where they outperform records in tight loops,…
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Zero-Trust Architecture for Backend Engineers: What It Actually Means Beyond the Marketing
A few years ago, securing a backend system was relatively straightforward. Applications lived inside a corporate network, databases sat behind…
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How the JVM Decides What to Compile: Inside the JIT Tier System and Profiling Pipeline
A conceptual walkthrough of C1, C2, tiered compilation, and why the JVM’s optimizer knows more about your code than you…
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Understanding Garbage Collection Pauses: Why Stop-the-World Still Happens and What the JVM Is Actually Doing
A conceptual guide to safepoints, GC roots, and why even modern collectors like ZGC and Shenandoah cannot always avoid pausing…
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The Java Memory Model Explained: Happens-Before and Concurrency Semantics
There is a quiet assumption embedded in almost every line of Java ever written: that when one thread writes a…
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Stop Using Virtual Threads for Everything: Performance Lessons Learned
When JEP 444 landed in Java 21 in September 2023, the reaction across the Java community was unusually enthusiastic. Virtual threads promised…
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Project Panama FFM API: Calling C Code Without JNI Hell
Java has always needed a way to call native code. Scientific computing, image processing, hardware drivers, cryptography libraries — the…
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