I learning hibernate and I understood that hibernate has stopped using cglib and switched to javaassist.
I also understood that javaassist and cglib are used for proxy generation.
so I was wondering how these two works and which one is better? What is the difference between their working style?
Cglib is no longer actively maintained and the library's developers would not even apply provided patches: https://jaxenter.com/hibernate-to-deprecate-cglib-as-bytecode-provider-102106.html
Additionally, javassist offers an API for modifying classes and not only for subclassing them. These APIs allow also for byte code-level manipulation while cglib only allows for several hardcoded interceptions.
Finally, there is a minor performance difference. For an overview, see this table on a third byte code manipulation framework, Byte Buddy, that I created: http://bytebuddy.net/#/tutorial
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