Background In the  third post of this series, I want to talk about unit testing, one of the most important part of the software development I thought. Creaating a developer-friendly unit testing environment and writing high-quality test cases

Paul Liang

Background Continuing from the previous post, where we built the database layer and Liquibase migrations, this article shows how to define REST APIs in our Spring Boot Todo application. We'll walk through creating controllers, connecting them to services

Paul Liang

Background After joining a new company, there are always many things to learn from scratch. Today, I want to walk your through how to build your first Java web application using Sprint Boot. In this post, most of

Paul Liang

Background I have been with GoFreight for 5 years. During the first two or three years, I was assigned to develop the crawler system for the tracking service. In the beginning, everything went well, and we were able

Paul Liang

Background Recently, I encountered an unusual bug, and upon investigation, we discovered that the root cause was related to the singleton object we had implemented earlier. This bug was deeply concealed, making it quite challenging to uncover. In

Paul Liang

Background Recently, I needed to hand over my previous side project to others, and I started to think about how could I complete it in an easy, simple, and low-communication cost way. That's when the term 'docker-compose' popped

Paul Liang