Summary

In this chapter, we created an application responsible for managing quote prices and enabling clients to access them through HTTP and WebSockets. The application uses plain Java EE code (no external dependencies). We also saw how to link the application to a database. We used MySQL as the database, which is a free and very common choice.

In the next chapter, we will go deeper into the Java EE stack, and understand its role and what it implies for the application in terms of the application's performance.