So, I was reading online and you cannot make Configuration final because CGLIB extends the class to create a proxy. However, I was reading the documentation for @Scope, and the default proxyMethod value is that no proxy is created (link here- https://docs.spring.io/springframework/docs/current/javadoc-api/org/springframework/context/annotation/Scope.html).
So, my main question is, is a proxy created for each @Configuration?
Spring creates proxy for a bean only if required ( example:Transaction management). I have explained this for another SO question here , please go through A2 section of the answer for more details.
For a @Configuration annotated class a proxy will always be created , which implies that it is required. Why it is required can be understood from the following references.
@Bean : Read through sections @Bean Methods in @Configuration Classes and @Bean Lite Mode
Do read through this excellent answer from @kriegaex to understand the inner workings of @Configuration class.
So to answer your question is a proxy created for each @Configuration ? Yes , unless the proxyBeanMethods for @Configuration is configured explicity.
Hope this helps.
