Understanig on Big(O) Notations

Reference Links

https://www.bigocheatsheet.com/

https://www.careerdrill.com/

https://ocw.mit.edu/courses/electrical-engineering-and-computer-science/6-046j-introduction-to-algorithms-sma-5503-fall-2005/video-lectures/

https://stackoverflow.com/questions/487258/what-is-a-plain-english-explanation-of-big-o-notation

System Design Interview Resources

Design Youtube # https://leetcode.com/discuss/interview-question/system-design/733520/Design-YouTube-Very-detailed-design-with-diagrams Unique Id Generator : https://instagram-engineering.com/sharding-ids-at-instagram-1cf5a71e5a5c