Yeonghan! Thank you so much for explaining the basic yet useful contents related to networks! It is hard to look back on these contents when I am busy with work, but thanks to you, I got to review http characteristics and API standards~! I created a lot of APIs while developing a new service for about 3 months, and thanks to you, I am repenting again? ㅠㅋㅋㅋㅋㅋ! Thanks to you, I am developing while having fun thinking. Thank you!