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Spring provides a high-level abstraction on top of JDBC with JdbcTemplate to make it easier to perform database operations. Spring also provides a high-level abstraction on top of JPA with Spring Data JPA to make it easy to implement CRUD operations, sorting, pagination, etc. Whether you use JdbcTemplate or JPA/Hibernate or Spring Data JPA, you need to take care of handling database transactions. A database transaction is a single unit of work, which either completes fully or does not complete at all, and leaves the database in a consistent state.

Introducing Spring Boot JDBC Support Spring’s JdbcTemplate provides high-level abstraction on top of DataSource to perform database operations. In addition to that Spring’s declarative Transaction Management capabilities helps to manage database transactions in a simplified way without having to write boilerplate code. Spring Boot simplifies the configuration of DataSource, TransactionManager, etc. by using it’s AutoConfiguration mechanism. How SpringBoot AutoConfiguration magic works? If you want to learn more about Spring Boot AutoConfiguration, see How SpringBoot AutoConfiguration magic works?

Introducing Spring Profiles Typically, software applications run in different environments. During development, it will be local, and then we may deploy it on QA, Staging, Performance and finally in Production environments. You may have to configure your application with different configuration properties while running the application in different environments. For example, if you are using a database then you may configure the database connection properties to a locally running database during development.

Logging is a common and important requirement for running applications in production. Spring Boot provides great support for application logging out of the box and offers various customization options. In this tutorial, you will learn how to implement logging in your Spring Boot application using Logback and Log4j2. Getting Started with Spring Boot If you are new to Spring Boot, refer Getting Started with Spring Boot tutorial to learn how to create a Spring Boot project.

In the previous Spring Boot Testing Tutorial, we have learned how to write unit, slice and integration tests for a Spring Boot application. In this tutorial, you will learn how to configure your Spring Boot application using properties and YAML files for running the application in different environments. Externalizing Spring Boot Application Configuration Any non-trivial application will have some configuration that you would like to make it configurable instead of hard-coding those values in the application code.

In the previous Getting Started with Spring Boot tutorial, we have learned how to create a Spring Boot application and built a simple REST API. In this tutorial, you will learn how to write unit, slice and integration tests for your Spring Boot application. Testing Spring Boot applications We should write Unit Tests to verify the business logic of a particular unit(a class, a method, or a set of classes), and they shouldn’t be talking to any external services like database, queues or other webservices etc.

Introducing Spring Boot Spring Boot is the most popular framework for building applications in the Java world. Spring Boot is an Opinionated and Convention Over Configuration based approach to building Spring framework based applications. Using Spring Boot, you can build different kinds of applications such as monolithic applications, microservices, serverless applications, Batch applications, etc. Let us take a quick look at what are the key features of Spring Boot that make it so popular.

TLDR; I am happy to announce that I am starting the SpringBoot - The Missing Guide video series on my SivaLabs YouTube Channel. This SpringBoot - The Missing Guide video series is for those who need help understanding SpringBoot’s magic. In this series, I will explain the core concepts used in Spring and SpringBoot with practical examples. Also, I will give a deep-dive explanation of SpringBoot’s AutoConfiguration and how to customize the default configuration.

Spring Framework 6 implemented the Problem Details for HTTP APIs specification, RFC 7807. In this article we will learn how to handle exceptions in SpringBoot 3 REST API(which uses Spring Framework 6) and provide error responses using ProblemDetails API. We are going to reuse the SpringBoot 3 sample application spring-boot-jpa-crud-demo which we used for Using Java Records with Spring Boot 3 article. Assume we have the following REST API endpoints to create a bookmark and fetch a bookmark by id.

Records were introduced in Java 14 as a preview feature and became a standard feature with JDK 16. Records are a concise representation of immutable data class. Prior to Records this is how we usually create an immutable class. import java.util.Objects; class Person { private final Long id; private final String name; public Person(Long id, String name) { this.id = id; this.name = name; } public Long getId() { return this.