When comparing Tornado vs Starlette, the Slant community recommends Starlette for most people. In the question“What are the best Python asynchronous web frameworks?” Starlette is ranked 4th while Tornado is ranked 6th. The most important reason people chose Starlette is:
Starlette is well-documented with examples and clear explanations
Ranked in these QuestionsQuestion Ranking
Pros
Pro Designed for performance
Tornado can scale to several open connections at the same time. This makes it perfect for applications where performance is very important.
Pro Amazing asynchronous functionalities
Pro Documentation
Starlette is well-documented with examples and clear explanations
Pro Performance
Optimized with ASGI, Starlette is among the fastest options Python servers available
Pro Active Community
Pro Free and Open Source
Cons
Con It's usually useful only when building real-time web applications
Because it's basically a framework for building real-time applications it has great support for things like WebScokets and uses non-blocking I/O. But it lacks in features that are used to build general-purpose websites like blogs, e-commerce sites, web portals etc...
For example it lacks ORM integration (at least out of the box) and it doesn't have a very powerful template engine.
Con DYI user authentication
Unlike Django, there's no standard way of handling users
Con No admin interface
Unlike Django, there's no built-in admin interface