Java
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Ways to Identify Your Apache Tomcat Server Version
Knowing the exact version of your Apache Tomcat server is essential for debugging, ensuring compatibility, applying security patches, and maintaining…
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RAG Architecture on the JVM: Building a Production-Ready Pipeline With LangChain4j
A practical walkthrough of embedding models, vector stores, retrieval strategies, prompt engineering, and evaluation — without leaving the JVM. 1.…
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Java Time API: Converting Between Date and Instant
Working with dates and times is a common requirement in applications, especially when dealing with distributed systems, APIs, or databases.…
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Java’s Memory Model Is Not What You Think: The Gap Between the JMM Spec and the JIT’s Actual Guarantees
The Java Memory Model is formally specified. The JIT implements a superset of that spec in ways the spec permits…
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Structured Concurrency and the Death of CompletableFuture Hell
What Java 21–26’s concurrency model actually changes at the architecture level. Not a feature tour — a genuine examination of…
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Kotlin 2.x vs Java 21+The Language Choice for New JVM Projects
The K2 compiler shipped. Multiplatform went stable. Java landed records, pattern matching, and virtual threads. The gap genuinely narrowed —…
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Spring AI Guide to MCP Elicitations
As AI systems become more interactive, handling incomplete or ambiguous user input becomes critical for building reliable applications. MCP elicitations…
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Spring Boot 4 vs. 3: What Actually Changed
The migration guides list dozens of changes. Most articles rehash the changelog. This piece focuses on the three changes that…
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Hibernate 6 vs. Spring Data JDBC vs. jOOQ. Picking Your Persistence Strategy for the Virtual-Thread Era
JDBC is still blocking. Hibernate 6 added reactive support through Vert.x. jOOQ is reviewing its ThreadLocal usage for Loom compatibility.…
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