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Java Code Geeks

Java Developers Resource Center

Understanding Java Virtual Threads with Example

Virtual Threads are one of the most important improvements to Java concurrency in recent years. They make it possible to run a very large number of...
Posted on 9 September 2026 | 10:06 am

The Universal Scalability Law: Why Some Systems Get Slower, Not Just Flatter

Neil Gunther’s Universal Scalability Law adds a second penalty term to Amdahl’s Law, and that one term explains a failure mode Amdahl’s original mo...
Posted on 9 September 2026 | 6:03 am

Checked Exceptions: The Language Design Debate Java Never Resolved

Why Java stands almost alone among mainstream languages in forcing you to declare or catch certain exceptions, the criticism that shaped C# and Kot...
Posted on 8 September 2026 | 4:57 pm

Consistent Hashing: The 1997 Paper Quietly Running the Internet

Dynamo, Cassandra, and every major CDN route requests through an idea from a 1997 theory paper. Almost nobody using it has actually read why it wor...
Posted on 8 September 2026 | 5:47 am

Java’s Sealed Classes Meet the Visitor Pattern

Replacing a classic GoF pattern with pattern matching: a before and after refactor of a Visitor hierarchy, collapsed into a sealed interface and an...
Posted on 7 September 2026 | 3:38 pm

OCaml Quietly Running the World’s Financial Infrastructure

How Jane Street’s bet on a niche functional language turned into a 30-million-line dependency, and what it teaches us about trading expressiveness ...
Posted on 7 September 2026 | 4:29 am

[FREE EBOOKS] Beyond Trust Falls, Mathematics in Cybersecurity & Four More Best Selling Titles

Hello fellow geeks, Fresh offers await you on our Information Technology Research Library, please have a look! Beyond Trust Falls: The Definitive G...
Posted on 5 September 2026 | 10:30 am

The Bytecode Verifier’s Hidden Contract

Every class file passes a formal dataflow analysis before the JIT ever sees it, and that quiet checkpoint is what actually makes the JVM’s sandbox ...
Posted on 4 September 2026 | 3:21 pm

Delta-State CRDTs: Solving the Bandwidth Problem Coordination-Free Replication Creates

CRDTs let replicas merge concurrent edits without coordination. The catch is what it costs to keep them talking to each other, and how delta-state ...
Posted on 4 September 2026 | 6:10 am

The Halting Problem’s Quiet Relevance to Static Analysis Tools

Why your linter can never be complete, and why that is not a bug in the tool but a theorem about computation itself. Every developer has had the sa...
Posted on 3 September 2026 | 4:00 pm