[spansoa]

> technical interviews that allow me to better understand the Twitter tech stack

And the stack is basically a very fancy CRUD app. That's all Twitter is. The only reason it's still operating is because of the premise: Create, Read, Update, Delete. NO magic sauce.

[jstx1]

Have you ever done CRUD for hundreds of millions of users distributed globally accessing your service 24/7? It's much more complicated than updating a database.

Then you have ranking algorithms, search, ad serving, moderation...

[DabbyDabberson]

90% of their revenue comes from their massive and complicated ads platform, not the basic web app you deal with.