Idea - best effort treatment for certain key-values

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Nowadays many setups do actually require a seamless combination of "ACID" key-value pairs and "best effort" key-value pairs (imagine analogy TCP packets and UDP packets treatment).

Would you consider adding support for a "tag" to distinguish between an "ACID" request on a key-value pair (or set of pairs) and a "best effort" request on a key-value pair (or set of pairs)?

I could imagine under high contention loads Sophia would simply ignore some ACID invariants when processing a request tagged with "best effort" or in the worst case simply drop the whole request (pretty much like routers and switches do with UDP).