When you enter a new company for enterprise application system development, you will generally encounter a new development environment and application system framework. To enter the role as soon as possible, you must familiarize yourself with the new system environment from two perspectives:
The first is the system development environment, and the second is the system running environment.
From the perspective of the development environment, we should understand the system hierarchy, how the project is created, and how each part of the project is associated. If it is a multi-project system, so how to establish the relationship between multiple projects, how to compile and package them, and so on.
From the running environment perspective, we should understand how requests are received and processed by the system framework.
As long as you start from the above two points, it is generally easy to enter the role.