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I just want to clarify few things.
I believe that Django server works asynchronously (because if every request from the client would block server then it wouldn't work), but I know also that the Django ORM isn't async. So do queries to the database block the server? (I mean that rest requests are waiting until the query is complete?) Or maybe it works completely differently and I misunderstood it.
I'm asking this because I heard that most ORMs are blocking and hence I can't use them in my Twisted server to get data from db without blocking twisted.
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Django has support for writing asynchronous (“async”) views, along with an entirely async-enabled request stack if you are running under ASGI. Async views will still work under WSGI, but with performance penalties, and without the ability to have efficient long-running requests.
Latest version of the popular Python web framework also provides an asynchronous interface for all data access operations. Django 4.1, a new version of the major Python-based web framework, adds capabilities such as asynchronous handlers and an ORM interface but also makes some backward-incompatible changes.
Django ORM is a powerful tool and one of the key pillars of Django. Django comes with the built-in database called SQLite. And we have described the ORM queries which acts same as the SQL queries.
Django ORM provides a level of abstraction which makes it easy to work with objects. ORM will automatically relate the object's attributes to corresponding table fields. We are going to make some models and check their field relationships in other tables. It is expected that you can make models and applications.
Why would the server need to work asynchronously? Django is a WSGI application; the concurrency model depends on the server you run it in, and that can be threading, multiprocessing, asynchronous (select loop driven) or a combo of those.
Each Django request itself is completely synchronous. Querying the database blocks the request until the result is returned. It doesn't need to be aware of other, concurrent requests (other than ensuring that Django handles data structures in a thread-safe manner).
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