Spring Cloud Gateway Architecture — Complete Production Setup Guide
How to build a microservices API Gateway with Spring Cloud Gateway. Routing, filters, JWT auth, rate limiting, circuit breaking, and load balancing — all with production-ready code.
Spring Cloud Gateway 2.x vs 4.x vs WebFlux — Complete Comparison
A full side-by-side comparison of Spring Cloud Gateway 2.x vs 4.x vs Spring WebFlux Gateway. Covers YAML config, filter implementation, performance, and selection criteria with production code.
JVM Options Tuning for Production — Complete Guide from GC to Memory
Step-by-step JVM tuning for Spring Boot production servers. GC algorithm selection, heap sizing, GC logging, OOM response, and container environment pitfalls — all from real-world practice.
Spring WebFlux Complete Guide — Reactive Programming in Practice
From WebFlux fundamentals to real-world implementation. Mono/Flux, Router Function, R2DBC, error handling, testing, and a performance comparison with MVC — all production-focused.
Spring Boot Memory Leak — Root Causes and Diagnosis
Five common memory leak patterns in Spring Boot applications and how to quickly diagnose them with Heap Dump analysis.
Spring Boot Performance Tuning — Cut Response Time by 50%
Practical tuning methods to reduce Spring Boot application response time. Step-by-step guide covering DB connection pools, JPA optimization, caching, and JVM settings.
Spring Boot NullPointerException — Root Causes and Prevention Patterns
Seven common causes of NPE in Spring Boot development, and how to prevent them fundamentally using Optional, defensive coding, and tests.