I think warm standby is a relatively new feature for Postgres. As someone who's had to configure warm standby recently, it's fine, but it's not active-active,

I think warm standby is a relatively new feature for Postgres. As someone who's had to configure warm standby recently, it's fine, but it's not active-active, which infuriated a few Oracle DBA colleagues. The best way to do that at the moment is by using a proxy like PgPool II.