This is my notes on Coursera’s “The Future of Payment Technology” course. During this learning I came across DeFi (decentralized finance) that interests me a lot. I may have a future blog about DeFi.

I came across this topic when evaluating data storage methods for a system design challenge. and realize it’s would be beneficial to learn the difference systematically. This is my learning notes based on “grokking system design”.

Today I migrated my personal blog from the default *.github.io to a custom domain. The process is not as smooth as I expected, so here I write down what I did right and wrong.

Git with local repos

• git add: Git to track our file

PDF version