What is AOP? AOP is a way to modularize cross-cutting concerns. Ok, what does “modularize” really mean? Modularization is the encapsulation of a unit of functionality. It is exactly what “Class” is doing in OO world. How about “cross-cutting concerns”? Basically it means any functionalities that span multiple modules/ classes. They include Transaction Management, Security, [...]

Externalize your configuration from war For settings that are going to change across different environments like database connection, you should externalize them from your war file. So, you can have your war be environment agnositic. Then, you can promote via simply copying your war across different environments. In Spring, there are several ways to achieve [...]