Hackers, I see that design question for PostgreSQL pluggable storages is very hard. BTW, I think it worth analyzing existing use-cases of pluggable storages. I think that the most famous DBMS with pluggable storage API is MySQL. This why I decided to start with it. I've added MySQL/MariaDB section on wiki page. https://wiki.postgresql.org/wiki/Future_of_storage#MySQL.2FMariaDB It appears that significant part of MySQL storage engines are misuses. MySQL lacks of various features like FDWs or writable views and so on. This is why developers created a lot of pluggable storages for that purposes. We definitely don't want something like this in PostgreSQL now. I created special resume column where I expressed whether it would be nice to have something like this table engine in PostgreSQL.
Any comments and additions are welcome. I'm planning to write similar table for MongoDB. ------ Alexander Korotkov Postgres Professional: http://www.postgrespro.com The Russian Postgres Company