The definitive guide to secure your application with the new OAuth2 stack in Spring Security 6 and Boot 3.

Learn about four of the most common design patterns used in the Spring Framework

REST, GraphQL, and gRPC are solutions to different problems when calling webservices. We look at how they differ and can be combined in our architecture.

A comparison between sequential IDs and UUIDs used as primary keys.

Learn how to set up OAuth2 for a Spring REST API using Spring Security 5 and how to consume that from an Angular client.

The basics of how Actuators work in Spring Boot, and how we can start configuring them. ------The reference article on the site: http://www.baeldung.com/spri...

Java 8 is still the king, Kotlin is growing like crazy and Spring is almost equivalent to Spring Boot now. The 2019 "State of Java" survey results are out!

Explore PostgreSQL's NOTIFY/LISTEN mechanism and learn how to use it to implement a lightweight message broker with no extra components.

Explore the practical implications of creating an interface for a single implementation in Java and understand the pros and cons of this approach.

Learn how to paginate and sort query results in Spring Data JPA.

In this second video of the series, I'm deploying the simple Spring Boot 2 web application to an EC2 instance and running a quick Gatling test against it. Th...

Learn about the conceptual differences between an entity and a DTO by example in Java.

A quick and practical introduction to SOLID with examples.

A quick and practical introduction to SOLID with examples.

Learn the the basics of Apache Kafka.

Explore the definition of the DTO Pattern and its reason for existing, and how to implement it.

Learn how Spring Data JPA and JPA both work with some high-level overviews and code snippets.

Learn the difference between final static and static final.

Explore the differences between Future and Promise, and learn about their key characteristics, use cases, and distinctive features.

Learn how to generate OpenAPI 3.0 specifications for a Spring REST API using SpringDoc.

Learn how to implement Saga Pattern in a microservices architecture with Orkes Conductor.

The final results of the "Java in 2017" Survey.

Learn about the new Docker Compose support in Spring Boot 3.1.0.

Learn what Data Transfer Object (DTO), Value Object (VO), Plain Old Java Object (POJO), and JavaBeans are. Understand the differences between them and when to use each type.

Building a multi-tenant system in Spring requires keeping data from one tenancy apart from another. We look how to separate requests into different databases by tenant, and how to validate that the...

Learn about the software design approach called event-driven architecture (EDA).

Set up Basic Authentication in Spring - the XML Configuration, the Error Messages, and example of consuming the secured URLs with curl.

Learn how to move from a basic Spring Security OAuth2 config to use JSON Web Tokens and how to work with JWT when consuming the API. This lesson is part of "...

Explore some extremely useful features available in the newer versions of Java. These features aren't only easy to learn but can also be implemented quickly without much effort when planning to...

In this tutorial, we learn how to sign and verify a JWT token in Spring Boot.

Explore the differences between Oracle Java Development Kit and OpenJDK.

Explore several database approaches in the Java ecosystem.

Learn how to use the -XX:MaxRAM flag to provide more tuning opportunities for the heap size calculation.

Discover API-First Development using Spring Boot and Open API Specification 3.0.

A quick and practical guide to securing Spring Boot APIs with API keys and secrets.

Learn how to document a Spring REST API using Swagger 2.

Discover the new repository interfaces introduced in Spring Data 3.

Learn how to configure a Kafka Dead Letter Queue (DLQ) with Spring.

Set up Basic Authentication in Spring - the XML Configuration, the Error Messages, and example of consuming the secured URLs with curl.

Explore and discover the differences between HttpSecurity and WebSecurity.

Explore a common N+1 problem while using Spring JPA and Hibernate.

Learn how to manipulate the HTTP response using the ResponseEntity class.

A quick and practical introduction to distributed systems.

How to set up Spring Data JPA to work with multiple, separate databases.

A quick and practical guide to the Interface Segregation Principle in Java.

Learn how to document a Spring REST API using Swagger 2.

Learn the advantages of and how to implement structured logging in Java.

Learn how to structure a typical Spring tiered architecture in fully independent layers using integration tests. Next Video - Verify If A Spring Application ...

Learn the basics of sorting with Java 8 lambdas. Here's a writeup with more practical examples: http://www.baeldung.com/java-8-sort-lambda===================...

Explore the new Java HttpClient API which provides a lot of flexibility and powerful features.

Learn how to use HTTPS Client Certificate Authentication in Java

Learn the fundamentals of using generative AI in Spring Boot applications and understand the essential AI concepts.

Let's get some solid metrics on the Java ecosystem

Learn how to create Docker images for a Spring Boot application

Let's get some solid metrics on the Java ecosystem

Learn how to move from a basic Spring Security OAuth2 config to use JSON Web Tokens and how to work with JWT when consuming the API. This lesson is part of "...

Learn how to split large files into small files by size and the specified number of files.

A quick and practical guide to gRPC with Spring Boot.

Discover the power of partitions in Kafka topics and learn how to consume messages from partitioned topics using Spring Boot.

Learn how to implement AES encryption and decryption using the Java Cryptography Architecture.

Learn how to convert a Maven build to a Gradle build.

Learn about two essential methods offered by Java's CompletableFuture, explore their differences, use cases, and when to choose one over the other

A quick exploration of Tabnine - a really cool coding assistant that make development simpler, and most importantly - a lot faster.

A quick and practical guide to using Apache Kafka with Spring.

Learn how to create powerful integration tests with Spring Boot and Testcontainers that connect to a dockerized database image

Compare microservices to service-oriented architecture (SOA).

A simple SSO implementation using Spring Security 5 and Boot.

Learn the basics of Java Bean validation, the common annotations and how to trigger the validation process.

A quick and practical guide to Scroll API in Spring Data JPA.

Learn the differences and similarities between Java 14 Records and Lombok.

Explore the differences between using the JAVA_HOME and PATH environment variables.