Spring Boot
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Enterprise Java
Spring’s ApplicationContext Startup Is Slower Than You Think:Fix It With AOT and Lazy Init
A forensic diagnostic of where startup time actually goes — BeanFactory, condition evaluation, component scan, proxy generation — which knobs…
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Enterprise Java
Jakarta EE 11 Under the Hood: What Spring Boot 4 Inherits and What It Ignores
Spring Boot 4 has understandably grabbed most of the headlines in the Java ecosystem. However, underneath the excitement around Spring’s…
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Enterprise Java
GraalVM Native Image: Why Reflection Still Breaks in 2026 and How to Fix It
GraalVM Native Image has solved the startup time problem. A Spring Boot application that previously took 3–5 seconds to start…
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Enterprise Java
Apache Camel Observability: A Practical Guide
Modern integration applications often connect multiple services, APIs, messaging systems, and databases. As these integrations grow in complexity, monitoring and…
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Enterprise Java
Advanced and Dynamic Searching With Spring Data JPA
From the classic Specification API to the new PredicateSpecification in Spring Data 4.0, generic search criteria builders, Querydsl integration, and pagination — everything your…
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Enterprise Java
Why Your Integration Tests Are Slower Than They Should Be: The Spring Context Cache You Don’t Know You’re Misusing
Every JCG article recommends @SpringBootTest for integration testing. Almost none explain the context cache model underneath it — how a single misplaced @DirtiesContext,…
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Enterprise Java
Spring AI: Testing MCP Tools
Testing Model Context Protocol (MCP) tools in Spring AI is essential to ensure that tools are correctly registered, discoverable, and…
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Core Java
HTMX in a Java World: Building Hypermedia APIswith Spring Boot and Thymeleaf
Tired of wiring up React for a search box? HTMX gives your Thymeleaf templates superpowers — live search, inline edits,…
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Enterprise Java
Building Read-Write Database Routing in Spring Boot with JPA
Enterprise applications often require the separation of database workloads to improve performance and scalability. Read operations can be directed to…
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