Securing RESTful APIs with OAuth 2.0 and Spring Security
A hands-on guide to securing RESTful APIs using OAuth 2.0 and Spring Security. Learn token-based authentication and implementation best practices.
Category: Architecture
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Handling 1 Million Messages per Second with Kafka & Spring Boot
Mission: Real-Time Throughput at Scale Bob, our favorite builder, now works at a fast-growing fintech company. His task? Build a real-time transaction processor that can handle 1 million messages per second. This isn’t your typical “Hello World” microservice. This is the real deal — Kafka + Spring Boot + production-grade tuning. What You’ll Learn ✔ Kafka architecture that supports…
Microservices vs Monolith in 2025: Why We Reverted
Bob’s Story: Spaghetti Code at the Pizza Shop In 2023, Bob opened a futuristic pizza chain.He was told microservices were the way to go.So he split everything into services: The first few months? Great.Fast deploys, cool architecture diagrams, CI/CD pipelines everywhere. Then… things got weird. “We’re engineers,” Bob said. “Not babysitters of YAML files and message…
Understanding the Dependency Inversion Principle in Java
Introduction to the Dependency Inversion Principle (DIP) Understanding DIP The Dependency Inversion Principle (DIP) is the “D” in the SOLID principles, and it emphasizes the importance of decoupling in software design. DIP states that: In simpler terms, DIP encourages the use of interfaces or abstract classes to invert the direction of dependencies. Instead of high-level…
Kafka Consumer Patterns in Spring Boot: Best Practices for High-Performance
Follow Bob’s journey through the world of Kafka consumer patterns in Spring Boot. Learn the differences between @KafkaListener, manual acknowledgment, and reactive consumption strategies—all illustrated with real-world analogies and performance tips.