It would be great if everything could be organized on a single Notion page so we can follow along with the lecture sequence. The EhCache source code is organized in Notion according to the lecture order, but why is the Notice code only available on GitHub? While progressing through the course, Notice-related source code suddenly appeared, and when I looked for it, it wasn't in Notion. I spent quite a while searching before finally finding the GitHub address. I want to proceed smoothly while watching the lectures, but I have to check both Notion and GitHub. If you don't explain how and when the controller, dto, service, and mapper were created, you should at least mention in the "Pre-setup for Class" section to clone the source code from the repository.