Postgres support should be awesome addition

[the-rarbg]

Postgres is also very popular anyway we could use postgres instead of mysql

[gmemstr]

I dug into this a little bit and came to the conclusion that adding PostgreSQL with the r2d2 library is tricky, because the base postgres crate wraps tokio_postgres, and therefore tries to spawn a nested runtime. I figure this mean that the database layer will need refactoring to be fully async so that tokio_postgres can be used directly.

[josecelano]

I dug into this a little bit and came to the conclusion that adding PostgreSQL with the r2d2 library is tricky, because the base postgres crate wraps tokio_postgres, and therefore tries to spawn a nested runtime. I figure this mean that the database layer will need refactoring to be fully async so that tokio_postgres can be used directly.

Hi @gmemstr, thank you for the feedback. I have not done much at the database layer. I only know we were considering alternatives to r2d2:

#616

And other changes. So I guess we need to make changes anyway for other reasons.

Have you consider other alternatives? Do you think r2d2 is still a good choice for this project?