Is Tornado a replacement to Django or are they complementary to each other?

Question

I have several questions about Tornado and other web frameworks.

1) Tornado claims to be a webserver (a non-blocking one, therefore much performant), so some people said

Answer 1

To answer the question,

• NO, Tornado is not a replacement to Django. It's an alternative.

• YES, they are complementary to each other but not in the same process (*)

I would use Django when it's a big team effort and/or needs to run on a SQL database.

I would use Tornado for everything else. Ie. personal projects, WebSocket related apps, apps that use a NoSQL backend.

(*) don't bother running django inside tornado or the other way around unless you really have a strong requirement for that.