Documentation is lacking

[EdorianDark]

This project looks very promising.
But I tried for 2 days to make use of it and failed.
The documentation seems to be very outdated, the book had its last commit in December 2018.
The Api documentation is also not very helpful, for example from the RootNode documentation I have no idea, what a subscription is or how to find more about it.
The examples like that for actix are confusing, since it is without comments and depend on the huge Starwars example.

This post https://blog.logrocket.com/how-to-create-a-graphql-server-in-rust/ is very helpful, but sadly already outdated.

It seems, that the schema defined by RootNode is static, but why does it to be created for every request?
Or is this only done in the examples?
The errors are also not very helpful, I have no idea, how to react to

         graphql_handler(&schema, &context, req, payload).await
   |     ^^^^^^^^^^^^^^^ expected struct `graphql::Context`, found `()`