(A very important feature of Flink is that it provides a good fault recovery capability, and this time Flink has greatly improved its performance. The new version of Flink1.12 opened another wave of technical updates. After a brief introduction to the Flink advanced case course, it will soon enter the actual deployment and advanced development part. The course content includes Flink installation and deployment, introductory practical cases, preliminary exploration of Flink principles, stream processing teaching, Flink advanced API and Flink-Table-SQL-cases, Flink advanced features and new features, Flink multilingual development, Flink monitoring and optimization.)