A great article that explains the internals of Git commits. Interesting read!

Better understanding of how SSH(or TLS) works(and why it is designed the way it is), even I think it can be better if it can attach some more diagrams :)

The original design concept for Kafka.

Raft is a great algorithm for understanding the consensus algorithm of distributed systems.

I think it's a great resource for learning CS.

Visualization is a wonderful method for education.