Concurrency Live - PyCon 2015 by David Beazley (@dabeaz) https://www.youtube.com/watch?v=MCs5OvhV9S4
Artisanal Async Adventures - PyCon APAC 2018 https://www.youtube.com/watch?v=IbwirUn9ubA
asyncio를 직접 만들어보자 https://www.pycon.kr/2018/program/tutorial/3
How does asyncio actually work? https://stackoverflow.com/questions/49005651/how-does-asyncio-actually-work
asyncio pitfalls https://news.ycombinator.com/item?id=17713581
