Learn how to recover from a failed Flyway migration using Spring Boot.
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Introduction to Transactions in Java and Spring
A quick and practical guide to transactions in Java and Spring.
Event-Driven Data with Apache Druid
A comprehensive guide to Apache Druid.
When Does JPA Set the Primary Key
Learn about the different strategies JPA uses to generate the primary key for an entity and at which moment each strategy sets the key value during persistence.
A Guide to the Hibernate Types Library
Learn how to use HIbernate Types and extend the types set of Hibernate.
Java Weekly, Issue 327
A preview of Kubernetes support coming to Spring Boot 2.3, and a handful of Google Cloud tools to help you build and deploy Spring Boot microservices.
Spring REST API + OAuth2 + Angular (using the Spring Security OAuth legacy stack)
Learn how to set up OAuth2 for a Spring REST API and how to consume that from an Angular client.
Calling Stored Procedures from Spring Data JPA Repositories
Learn how to call stored procedures from Spring Data JPA Repositories
Parsing Command-Line Parameters with Airline
Learn how to parse command-line parameters with Airline
Transaction Propagation and Isolation in Spring @Transactional
Learn about the isolation and propagation settings in Spring’s @Transactional
The State of Java in 2019
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!
Twelve-Factor Methodology in a Spring Boot Microservice
A quick and practical overview of twelve-factor approach when developing Spring Boot microservices.
JHipster Authentication with an External Service
Learn about JHipster’s use of Spring Security and how it simplifies authenticating with an external service.
Spring Security: Exploring JDBC Authentication
Explore the capabilities offered by Spring to perform JDBC Authentication using an existing DataSource configuration.
A Quick Look at R2DBC with Spring Data
Explore R2DBC in its early stage.
Java Weekly, Issue 289
A new explore-the-project option is available on Spring Initializr, and a guide to making Kotlin code easier to read through the use of scope functions.
Understanding the JAR Manifest File
Learn about the JAR Manifest file, its capabilities and more.
Types of SQL Joins
Explore different types of SQL joins and their implementation in Java.
Java Weekly, Issue 274
A great write-up on controlling test execution order in JUnit 5, and some really solid advice from a veteran conference speaker.
Resolving “Failed to Configure a DataSource” Error
Learn what causes the Spring Boot error “Failed to configure a DataSource” and how to resolve it