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Core Java
G1’s Own Throughput Fix: JEP 522 and the Quiet Death of “G1 Trades Throughput for Latency”
For a decade and a half, “G1 gives up some throughput for lower pause times” has been treated as a…
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Python
Python’s GIL and the Concurrency Model It Encodes
The Global Interpreter Lock was never an arbitrary restriction someone bolted onto Python out of laziness. It was the cheap,…
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Java
Null Safety and the Billion-Dollar Mistake
Tony Hoare spent one sentence apologizing for the null reference and the software industry has spent six decades cleaning up…
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Core Java
Java as MCP Infrastructure: What Happens When Every Enterprise JVM Becomes an Agent Host
Spring AI, LangChain4j, Quarkus, and Helidon all now speak the Model Context Protocol. That is a bigger shift than another…
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Enterprise Java
Testcontainers + Spring Boot 4: The Integration Test Setup Teams Actually Use
Not a getting-started guide. The opinionated patterns teams converge on once the novelty wears off and the suite has to…
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Core Java
Project Valhalla in Practice: Writing Your First Value Class
JEP 401 is real, it’s in an early-access build today, and you can run it right now. It just isn’t…
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Core Java
Structured Concurrency: What Changes for the Try/Catch Generation
A real CompletableFuture chain, rewritten into StructuredTaskScope, plus the JDBC cancellation gap nobody’s fixed yet. Java developers who learned concurrency…
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Core Java
Compact Object Headers in Production: The Free 15–25% Heap Reduction Nobody Enabled
JEP 519 shipped stable in JDK 25. It shrinks every single object header on the heap. It’s one JVM flag.…
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Software Development
The Actor Model’s Long Lineage: From Hewitt’s 1973 Paper to Kotlin Coroutines
Every “actor” you’ve used, Erlang’s, Akka’s, Kotlin’s, descends from a single 1973 formalism. What survived the trip from language primitive…
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