in my use case, i don't really care about the versions of a document. i
only care about the latest version. so i was wondering if its a good idea
to disable it so that i save on space overhead of multiple versions? if so,
how do i go about it?
also, is there an api to purge all documents older than a certain
timestamp? i saw that with each document, you can associate a ttl but i
don't want to pre-commit myself to it at the time of document indexing.
instead, i want to be able to do it in an adhoc manner.