Real vulnerabilities found during production code reviews — with the exploit, the impact, and the fix for each one.

A speed-run guide to setting up complete observability with Prometheus, Grafana, Loki, and Tempo — with pre-built dashboards you can copy-paste

A practical migration guide covering Java 21 baseline, Jakarta EE 11, Hibernate 7, virtual threads by default, and what you need to do now to be ready

A complete implementation guide covering index design, custom analyzers, multi-language support, autocomplete, faceted search, relevance tuning, pagination strategies, and zero-downtime reindexing.

Implement the same business process two ways — orchestration and choreography — with full Spring Boot and Kafka code. Compare complexity, debugging, coupling, and failure handling to know when to choose which.

Stop memorizing abstract flow diagrams. This post walks through building OAuth2 from the wire up — actual HTTP requests, token anatomy, PKCE, refresh tokens, and JWT validation in Spring Boot.

The real migration strategy from someone who's done it three times — covering the strangler fig pattern, bounded context identification, database decomposition, and rollback planning.

A decision guide for choosing between REST, gRPC, Kafka, event-driven, saga, API gateway, and service mesh — with Spring Boot implementations, failure modes, and real-world tradeoffs.

Not a fanboy post for either language — a practical comparison of where each genuinely wins, where Java has caught up, and how to choose for your next project

What actually gets asked at FAANG and top-tier companies for senior Java roles — from Java 21 features to system design rounds, with sample questions and ideal answers.