How to Configure MyBatis with Spring Boot
Learn to configure MyBatis with Spring Boot 3 and configure @Mapper and DataSource. Also, learn mapper scanning with @MapperScan with example.
Spring Boot and GraphQL Tutorial
Learn the core concepts of GraphQL and running an example Spring Boot application with GraphQL integrated for querying and updating the data.
Spring Boot and Angular Application Example
In this Spring boot with Angular tutorial, learn to create REST APIs using Spring boot and call from Angular to create a CRUD application.
Spring Boot Gradle Plugin
Spring Boot Gradle plugin provides support for Spring Boot applications using Gradle as the build automation tool that helps in dependency management and application packaging.
Springdoc OpenAPI: Swagger UI for Spring Boot REST APIs
Springdoc OpenAPI generates the OpenAPI 3 document and the Swagger UI page for a Spring Boot REST API from one starter dependency. Default URLs, springdoc.* properties, Swagger annotations, groups, security scheme and how to switch the docs off in production.
Spring Boot Non-web Application Configuration
Learn different ways to configure a Spring Boot non-web application that starts without an embedded Web server such as tomcat or jetty.
Caffeine Cache with Spring Boot
Learn about Caffeine Cache and how we can use Caffeine with Spring Boot. Learn to configure caching, add and evict cache entries with example
Spring Boot Tutorial
Learn Spring Boot with the following in-depth tutorials, covering from basic to advanced concepts such as packaging and monitoring.
Spring Boot Profiles
Learn about Spring profiles, @Profile, profile-specific beans and properties, profile groups and activating a certain profile during startup.
Accessing Properties in Spring Boot
Learn to use @PropertySource, @Value and @ConfigurationProperties annotations to register property files and inject configuration properties.
Spring Boot HikariCP DataSource Configuration
HikariCP is a lightweight JDBC connection pool. Learn about various options for configuring the HikariCP with Spring boot JPA and hibernate.
Kafka Multiple Consumers: Consumer Groups and Partitions
Kafka consumers with the same group.id split the partitions of a topic, while each consumer group gets every message. Real runs with 1 to 4 consumers, rebalance logs, assignment strategies, the new KIP-848 protocol and Spring Boot @KafkaListener concurrency.
Spring Boot Kafka JsonSerializer Example
Learn to use Kafka JsonSerializer and JsonDeserializer classes to store and retrieve JSON from Kafka topics and return the Java model.
Spring Boot and Kafka using Docker Compose
Learn to configure the Kafka producer and consumer in a Spring Boot 3 application and test using KafkaTemplate and @KafkaListener.
Spring Boot DataSource Configuration with HikariCP Examples
Configure a DataSource in Spring Boot 4 with spring.datasource.url, username and password, and Spring Boot creates a HikariCP pool. Tested examples for pool tuning, DataSourceBuilder, a second DataSource, schema.sql and data.sql, and tests with H2 and Testcontainers.
Spring Boot Gzip Compression: Global vs. URLs Specific
Learn to enable HTTP response gzip compression in a Spring Boot application. By default, the gzip compression is disabled in Spring Boot.
Read a File from Resources in Spring Boot
Learn to read a file from the ‘/resources’ folder in a Spring boot application using ClassPathResource, ResourceLoader interfaces and @Value.
Spring Boot and Hibernate CRUD Example
Learn to build a robust Spring Boot application with Hibernate, covering CRUD operations, paging, filtering, caching, and best practices.
Accessing Command-Line Application Arguments in Spring Boot
Learn to pass and retrieve the command line arguments in a Spring boot application using ApplicationArgument injection and @Value annotation.
Spring Boot Async REST Controller with SseEmitter
Learn to write spring boot async rest controller using SseEmitter which is a specialization of ResponseBodyEmitter for sending Server-Sent Events.
Spring Async REST Controller with Callable
Learn to write spring boot async rest controller which support async request processing and returning the response using Callable interface.
Writing a POST REST API in Spring Boot
In Spring Boot 3 REST POST API tutorial, create an HTTP POST REST API, return the API response and add validations for the request body.
Spring Boot Retry Example
Learn to use Spring retry module for implementing retry-based remote API invocations that can handle runtime exceptions or network failures.
Spring Batch Example with Spring Boot 4 (Spring Batch 6)
Spring Batch example with Spring Boot 4 and Spring Batch 6. We read a CSV file into an H2 table with a chunk-oriented step, run the job on startup and on demand with job parameters, skip bad lines, restart a failed run and test the job with JobOperatorTestUtils.
Spring Boot @Async Controller with CompletableFuture
Learn to use Spring @Async with @EnableAsync to create non-blocking REST controllers in a Spring Boot application.
Spring Boot HATEOAS Links Example
In this Spring Boot HATEOAS example, we will learn to add HATEOAS (Hypertext as the Engine of Application State) links to resource representations returned from REST APIs in a Spring boot application. 1. What is HATEOAS? HATEOAS is one of the constraints of the REST architectural style first presented by …
Creating Spring Boot Fat/Uber Jar or War Files
Learn to create fat or uber jar or war build for spring boot applications using the spring-boot-maven-plugin with an example.
Spring Boot CommandLineRunner Example: 3 Ways to Use
Learn how to use Spring Boot CommandLineRunner interface with examples, and how it is different from the ApplicationRunner interface.
Spring Boot Embedded Jetty Server Configuration
Spring Boot bundles Tomcat and Jetty dependencies as separate starters to make easy switching them using configurations and properties.
Spring Boot: Change Default Port of Embedded Server
By default, Spring boot embedded server starts at port 8080. Learn to change the default port using Java configuration, command line, and properties.
Spring Boot JSP Example: Dependencies, War and View Resolver
Spring Boot JSP example: add tomcat-embed-jasper and the Jakarta JSTL artifacts, set spring.mvc.view.prefix and suffix, use war packaging, and render a list page and a form with embedded Tomcat.
Spring @ExceptionHandler vs @ControllerAdvice with Examples
Spring @ExceptionHandler methods handle exceptions in one controller, and the same methods in a @ControllerAdvice class handle them for every controller. Learn the difference, return ProblemDetail (RFC 9457) bodies, handle validation errors and @ResponseStatus, and test each handler with MockMvc on Spring Boot 4.