Spring Boot Tutorial

Spring Boot is a Java framework used to build production-ready web applications, REST APIs, microservices, and enterprise backend systems with less configuration.

Spring Boot simplifies Spring development through auto-configuration, starter dependencies, embedded servers, and a clear application structure. It helps developers create, test, secure, and deploy reliable Java applications faster.

How to use this course: Start with setup and project structure, then build a REST API, connect a database, add validation and security, and finish with testing and deployment.

Spring Boot Course Topics

01

Spring Boot Introduction

Understand what Spring Boot is, why it is used, and how it simplifies enterprise Java development. Learn the framework’s core ideas, auto-configuration, starters, embedded servers, and production-ready application structure.

02

Spring Boot Setup

Prepare your development environment with Java, Maven, IntelliJ IDEA, and Spring Initializr. Create a working project, understand dependencies, run the application, and verify your first Spring Boot endpoint.

03

Project Structure

Organize a Spring Boot project using packages, configuration files, resources, controllers, services, repositories, DTOs, and tests. Follow conventions that keep growing applications clear and maintainable.

04

Spring AOP

Separate cross-cutting concerns such as logging, auditing, transactions, and security from business logic. Understand aspects, pointcuts, advice, proxies, and practical AOP patterns in Spring Boot.

05

Spring Data JPA

Connect Spring Boot applications to relational databases with entities, repositories, relationships, queries, pagination, transactions, and validation. Build a clean persistence layer with Hibernate and JPA.

06

REST API Development

Build production-style REST endpoints with controllers, request mappings, DTOs, validation, response entities, status codes, and JSON. Learn how to structure APIs that clients can use reliably.

07

REST API Design

Design consistent APIs with resource naming, HTTP methods, error responses, pagination, versioning, idempotency, and security boundaries. Apply practical conventions for maintainable backend services.

08

Request Validation

Protect API boundaries with Bean Validation, DTO constraints, nested validation, custom rules, method validation, and useful error responses. Keep invalid input out of application business logic.

09

Global Exception Handling

Create consistent error responses with RestControllerAdvice, exception handlers, status codes, validation errors, and safe messages. Make APIs easier to debug for developers and clients.

10

Spring Security

Secure Spring Boot applications with authentication, authorization, password handling, roles, permissions, filters, JWT concepts, and protected endpoints. Build a practical security foundation for APIs.

11

Spring Boot Testing

Test controllers, services, repositories, and application wiring with focused unit and integration tests. Learn useful Spring test annotations, mocks, test data, and reliable test organization.

12

Comprehensive Testing

Go deeper into test strategy with slices, MockMvc, integration environments, database tests, test profiles, and maintainable test suites. Balance speed, coverage, confidence, and realistic behavior.

13

Actuator and Monitoring

Monitor Spring Boot applications with health checks, liveness, readiness, metrics, endpoint security, Prometheus, Grafana, and custom indicators. Prepare services for production operations and observability.

14

Deployment

Prepare Spring Boot applications for deployment with packaging, environment configuration, profiles, containers, cloud platforms, logs, health checks, and reliable production startup strategies.

15

Profiles and Configuration

Separate development, testing, staging, and production settings without changing application code. Use profile files, activation methods, externalized configuration, and safe handling of environment-specific values.

16

HikariCP Connection Pool

Understand how database connection pools improve application performance and reliability. Configure HikariCP settings, monitor connections, avoid common mistakes, and tune database access responsibly.

17

File Uploads

Build safe multipart file upload endpoints with validation, size limits, storage strategies, filenames, content types, error handling, and download responses for real Spring Boot applications.

18

Scheduling

Run recurring background tasks with Spring scheduling. Configure cron expressions, fixed delays, thread pools, error handling, time zones, and operational safeguards for reliable scheduled jobs.

19

Redis Caching

Improve response times with caching and Redis. Learn cache keys, expiration, serialization, invalidation, cache abstraction, failure considerations, and patterns for data that changes frequently.

20

Spring Boot 2 to 3 Migration

Plan a safe upgrade from Spring Boot 2 to 3 with Java versions, Jakarta namespace changes, dependency updates, security changes, testing, observability, and deployment verification.