- huydx : http://kipalog.com/posts/Lan-dau-tham-gia-ISUCON-va-nhung-kien-thuc-giup-website-cua-ban-nhanh-len-gap-N-lan
- huytd : Gradient Descent in Action 💀
- nguyenquanminh: 💀
- kiennt: read There is no Fork: an Abstraction for Efficient, Concurrent and Concise Access
- rhacker : Concurrency implementation https://github.com/rhacker/concurrency-learning
- hieuk09: Look into Ruby profiler