Mocking an API lets you verify if you call API methods you planned to call, but only integration test will verify if you actually understand this API.

Get to know all 14 UML diagram types with the help of examples. The guide includes images for all types of UML diagrams so you can quickly identify them.

A ridiculous collection of web development cheatsheets

To avoid bugs, BigDecimal should be used like this.

:art: Diagram as Code for prototyping cloud system architectures - mingrammer/diagrams

Level up your Java code and explore what Spring can do for you.

Get to know the proven Apache Kafka alternative for powerful performance without the high cost or complexity. It's streaming data made simple.

Rich Criteria API for JPA providers. Contribute to Blazebit/blaze-persistence development by creating an account on GitHub.

Instancio is a test data generation library for Java. Its goals are to automate data setup, make tests more concise, and reduce test maintenance effort.

A curated list of awesome frameworks, libraries and software for the Java programming language. - akullpp/awesome-java

Learn how to map calculated entity properties with the Hibernate @Formula annotation or the JPA @PostLoad ad @Transient annotations.

Learn what the best way to generate a TSID (Time-Sorted Identifier) entity identifier with JPA and Hibernate is.

The Big(O) Notation is a fundamental concept to help us measure the time complexity and space complexity of the algorithm. In other words...

The article explains optimistic and pessimistic locking. We consider a Spring Data JPA application with concurrent transactional code as an example.

Vaadin seamlessly connects Java Spring Boot & React to accelerate application development by eliminating the need for REST APIs & GraphQL queries.

Learn Choreography Saga Pattern with Spring Boot + Kafka for handling transactions in Microservices architecture