I finally finished organizing the long lecture today. This advanced Spring lecture was worth the money because it kindly taught me everything from design patterns to AOP. After listening to the lecture twice and organizing it, my understanding of JDK dynamic proxy and CGLIB has improved more than before, and I think I will be able to confidently choose the technology if I ever have to consider AOP in my future work. Thank you for making such a great lecture. (_ _) (bow)