Samples and tutorials for Spring Boot modules such as, but not limited to, Spring Data, Spring Batch, Spring Cloud, Spring Security, Spring GraphQL, and Spring Test. Each tutorial is equipped with source code in individual submodules and can be found on GitHub.

Motivation

While it is common to find Spring Boot tutorials on the Internet, it is challenging to find tutorials that are up-to-date and include automated tests to demonstrate the implementation and ensure stability.

Commitment

Continual improvement is fundamental in software development. This repository is committed in ensuring adherence to best practices and keeping all dependencies up-to-date. The quality of these tutorials and the knowledge imparted is, and always will be, my primary goal.

With the help of Dependabot, each tutorial is also kept up-to-date with the latest dependencies. Currently, we are using Java Temurin 25

Spring Boot Tutorials

Architecture: Hexagonal Architecture

jOOQ: Implement jOOQ with Spring Boot and Gradle

Spring Boot Observability with OpenTelemetry

Spring AI: Vector Similarity Search with PgVector

Spring AI: Vector Similarity Search with Redis

Spring Batch: Bulk Update with JDBC

Spring Batch: Working With REST Resources

Spring Batch: Skip Specific Data

Spring Cloud: JDBCEnvironmentRepository Sample Application

Spring Data: Domain Events Example

Spring Data Envers: Audit With Entity Revisions

Spring Data JDBC: Implement Auditing

Spring Data JDBC: Optimistic Locking with @Version

Spring Data JDBC: Generate Liquibase Changeset

Spring Data Jpa Audit Example

Spring Data JPA: Perform Entity Validation at Repository Level through Event Driven

Spring Data Jpa: Global Filter Query

Spring Data JPA: Hibernate Second Level Caching with EhCache

Spring Data JPA: Keyset Pagination (Scroll API)

Spring Data MongoDB Audit Example

Spring Data MongoDB: Full Text Search

Spring Data MongoDb with Testcontainers

@Transactional with Spring Data MongoDB

Spring Data Redis: Implementing Caching with Spring Data Redis

Spring Data: Repository Definition

Spring Data REST with Composite ID

Spring Data REST: Validation

GraphQL With Spring Boot

Spring JDBC: JdbcClient

Spring for Apache Kafka

Spring AMQP: Dead Letter Queue with RabbitMQ

Spring Modulith: Event Publication Registry with PostgreSQL

Spring Modulith: Building Modular Monolithic Applications

Stubborn Contract Consumer Tutorial

Stubborn Contract Producer Tutorial

Spring Test: Managing Test Data with TestExecutionListener

Spring Test: Implement BDD with RestAssured

Spring Test: Slice Testing a REST Application

Spring Web: Problem Details for HTTP APIs

Spring Web: REST Clients for calling Synchronous API

Spring Web: Retry with RestClient

Preventing XSS with Spring Security and Thymeleaf

Spring Web: Virtual Threads

Motivation

Commitment

Spring Test: Managing Test Data with `TestExecutionListener`