https://hackernoon.com/consensuspedia-an-encyclopedia-of-29-consensus-algorithms-e9c4b4b7d08f

https://www.kdnuggets.com/2018/07/sql-cheat-sheet.html

https://www.quora.com/What-are-the-prerequisites-to-learn-convex-optimization

https://jods.mitpress.mit.edu/pub/issue3-case?__s=wvtwtdzek6uqqfiffffi

https://www.quora.com/What-are-remarkable-algorithms-methods-for-convex-optimization