I'm actually working on a personal project. As the instructor said at the beginning of the lecture, I created an API, but I had doubts about how well my API could perform. That's why this lecture was even more touching, and I think I was able to take my first step toward performance testing easily through this lecture! And I realized that it's more developer-like to say more specific things like 'latency' and 'throughput' instead of just using the vague word 'performance' on my resume! I also liked that I could quickly review my knowledge about the operating system, and I think it was even more stimulating because he gave me gentle advice(?) that hit me in the face every now and then. ㅎㅎ