Comment by Const-me

> no variable-length columns

Both varchar and varbinary columns work fine there. Blobs are indeed missing.

> data loss on restart

That’s OK, collections in memory do as well yet we use them pretty much everywhere.

> Unlogged tables skip write-ahead logging

I don’t want any disk I/O for my memory tables.

Another thing, aren’t PostgreSQL tables without write-ahead logging cause consistency bugs after restart when normal tables are current due to the logging, unlogged tables are old?