https://prepcommons.com/https://prepcommons.com/blog/design-twitter/https://prepcommons.com/blog/design-twitter/01-clarify-requirements/https://prepcommons.com/blog/design-twitter/02-capacity-estimation/https://prepcommons.com/blog/design-twitter/03-api-design/https://prepcommons.com/blog/design-twitter/04-data-model/https://prepcommons.com/blog/design-twitter/05-high-level-architecture/https://prepcommons.com/blog/design-twitter/06-timeline-fanout/https://prepcommons.com/blog/design-twitter/07-storage-and-media/https://prepcommons.com/blog/design-twitter/08-caching/https://prepcommons.com/blog/design-twitter/09-search/https://prepcommons.com/blog/design-twitter/10-trending-and-bottlenecks/