Explaining the FrontController pattern

In the Java EE world, we commonly work with complex projects that have similar functionalities and processes. Sometimes, using various controllers to handle a request is a bad practice because it needs to be configured at multiple endpoints and incurs a large cost of creation and maintenance. Consequently, creating a central point to treat a request is a very good solution, as it creates one point to manage all or a group of requests and then sends this request to the correct process. We can then treat all points that are common to all functionalities and send the request to a process to treat the questions that are not common to all but are specific to one functionality. Some configurations, such as session configuration, the maximum size limit of a request, cookie, and header, are common to all requests and can be configured from...