Spring Boot

✅ What is Pagination?

Pagination is a technique to split large sets of data into smaller, manageable chunks (pages), improving performance and user experience—especially in APIs and UI tables. 🔧 Why Use Pagination? 🐢...

✅ How Rollback Works in Spring Boot?

🔄 Spring uses: @Transactional annotation AOP (Aspect-Oriented Programming) Underlying transaction manager (e.g., JDBC, JPA, Hibernate) 🧪 Example: Rollback with @Transactional @Servicepublic class AccountService {     @Autowired    private AccountRepository...

Inversion of Control (IoC) & Dependency Injection

🔁 Inversion of Control (IoC) Inversion of Control means giving control to the framework (like Spring) to manage object creation and dependencies — instead of writing that logic yourself. 📦...

Swagger Documentation with Spring Boot

📘 What is Swagger? Swagger (OpenAPI) is a tool that automatically generates interactive API documentation for your REST endpoints — making it easier to test, share, and understand your APIs....

Apache Kafka with Spring Boot

🛰️ What is Apache Kafka? Kafka is a high-performance, distributed messaging system used for real-time data streaming. It works like a distributed queue, but is faster, scalable, and durable —...

Messaging and Spring JMS with Spring Boot

📬 What is Messaging? Messaging allows different parts of an application (or different systems) to communicate asynchronously via a message queue. Instead of one system calling another directly, it sends...