I don't know how 398 minutes passed by. There was no time to get bored. It's more fun than Netflix!!! It was like watching a movie, and I learned how performance is optimized step by step with my fingers before my head. At the end, you introduced Spring Boot JPA and queryDSL, which made me look forward to the next lecture, but I'll put my curiosity aside for a moment and go to the basic course. After taking parts 1 and 2, I became curious about the concept of ORM and basic theories. Since most of the parts I was curious about were introduced in the curriculum of the basic course, I expect that my understanding of JPA will deepen if I review parts 1 and 2 after completing the basic course. I purchased the entire roadmap, and I don't think it was a waste of money at all. After completing the roadmap, I plan to take the instructor's next roadmap, Spring Complete Conquest. I still have so many questions^^