Django multi-db：将所有写入路由到多个数据库

I am currently sitting in front of a more specific problem which has to do with fail-over support / redundancy for a specific web site which will be hosted over @ WebFaction. Unfortunately replication at the DB level is not an option as I would have to install my own local PostgreSQL instances for every account and I am worried about performance amongst other things. So I am thinking about using Django's multi-db feature and routing all writes to all (shared) databases and the balance the reads to the nearest db.I am currently sitting in front of a more speci