Hey, I have a unit testing framework, where every test is ran in BEGIN..ROLLBACK, to ensure that data created during testing is never persisted.
Now, my question is: is there any way to tell postgres that "Look, I will never ask you for a COMMIT, therefore you don't have to lock anything for me, you just have to do a 'snapshot', fake my writes in my view of the world, then destroy all this on rollback". This way, I would be able to run my many test cases in parallel, without worrying about locks/deadlocks between different testcases. Something like BEGIN READ ONLY TRANSACTION WITH TEMPORARY WRITES... I of course researched this a little bit, and I know that there are no out of the box syntax for this, but is there maybe some combinations of options which I can abuse to provide this? (I can naturally do this on the filesystem with snapshots and LVM, but I would like something in postgres, so it doesn't become a sysadmin nightmare.) Thank you for your ideas, Gergely Risko
