I'm a computer science student, and I have to do an assignment about how Stack Overflow (or related services) internally work, with UML analysis.
Because I don't usually use stackoverflow, I have extracted the biggest part of the analysis from the FAQ and exploring a little, but I don't find how some high-reputation users actions work.
The questions are:
- How do closed questions work? Can the asker select the best answer while the question is closed?
- How are questions deleted? Do they need a number of delete votes for being deleted (like close-reopen question votes)? Or they are deleted instantly when a high-reputation user says so?