Boot

Building Microservices with Spring Boot

How to design, discover, secure, and make resilient a set of independently deployable Spring Boot services using Spring Cloud.

Exception Handling in Spring Boot

Learn how to handle errors gracefully in Spring Boot REST APIs using @ExceptionHandler, @ControllerAdvice, and structured error responses.

Logging in Spring Boot

How Spring Boot's default Logback-based logging works, including log levels, per-package configuration, and structured logging for production.

Spring Boot Actuator

How Spring Boot Actuator exposes production-ready monitoring endpoints for health checks, metrics, and application internals.

Spring Boot Auto-Configuration

How Spring Boot inspects the classpath and existing beans to automatically configure sensible defaults, and how to customize or override them.

Spring Boot Interview Questions

A curated walkthrough of the Spring Boot interview questions that come up most often, from auto-configuration internals to system-design judgment calls.

Spring Boot Project Structure

How a typical Spring Boot project is organized on disk, from Maven/Gradle build files to source packages and resources.

Spring Boot Quick Reference

A condensed cheat sheet of the most-used Spring Boot annotations, configuration patterns, Actuator endpoints, and CLI commands.

Spring Boot Starters

How starter dependencies bundle coherent, version-compatible sets of libraries so you can add capabilities like web or data access with one line.

Spring Boot with Docker

How to containerize Spring Boot applications using Dockerfiles, layered JARs, Cloud Native Buildpacks, and Docker Compose for local development.

Testing Spring Boot Applications

A practical guide to layering unit, slice, and integration tests in Spring Boot using JUnit 5, Mockito, MockMvc, and Testcontainers.

Validation in Spring Boot

Learn how to validate incoming request data in Spring Boot using Bean Validation annotations, @Valid, and custom validators.

What Is Spring Boot?

An introduction to Spring Boot as an opinionated, production-ready extension of the Spring Framework that removes boilerplate configuration.