How a namespace's entries can be busted — and therefore how operators reason about it.
Entries carry a customerId FT tag → bustable per customer via tag invalidation.
customerId
Entries carry a collection FT tag → a directory-wide bust, not per customer.
collection
No tag index — only an exact-key delete or a full namespace clear reaches it.
How a namespace's entries can be busted — and therefore how operators reason about it.