(After the SpringBoot2 upgrade, it brought many new features and differences in the underlying source code design. This set of video tutorials is based on SpringBoot2.3 and 2.4 versions, suitable for beginners with Spring and SpringMVC foundation, or learners who want to learn more about SpringBoot. The tutorial includes chapters such as core foundation, web principles, unit testing, data access, and indicator monitoring. Through the study of the above content, your SpringBoot level will be improved, and application development will be handy!)