Overview There are times you need to do some start-up work when your Spring application launch. One of the methods is to use the CommandlineRunner interface. In this post, I’m going to show you how to use this interface to run startup tasks with flexibility. Let’s get started. Meet the CommandlineRunner interface The CommandlineRunner interface … Read more
Overview In this post, I will show you how you can quickly test the email-sending function of your application using MailHog. The application I’m demonstrating is a Spring Boot web app. However, you can use the code in almost all applications. Let’s get started. Setup MailHog MailHog is a fantastic tool for developers to test … Read more
With Spring AOP, you can simply use the @Transactional annotation to handle transactions in your app.
In this post, I’m going to quickly show you how to configure data sources in Spring applications.
Overview In the first post of this series, I briefly discussed the problem with multiple database operations and the need for using transaction management. In the last post, I also showed you how to set up PostgreSQL database using docker-compose. In this post, I’m going to show you the problems and solutions with code. The … Read more
How to create a producer and consumer to send and consume messages using message queue.