Techniques for generating and vending of unique sequence values are described. Each master of a ring of masters is configured to create and vend the unique sequence values downstream to filling pools for eventual client consumption. When a ring of masters is employed, each master communicates with one another to agree on a current range of values that should next be vended. A master may then vend these values to a layer of one or more filling pools, at least of which includes or has access to persistent and non-persistent storage memories.