1. A computer-implemented method for object-granular policy assignment in an object storage environment, the method comprising: automatically assigning a plurality of objects stored within the object storage environment to one or more policies; and locating one or more of the objects among a plurality of policy rings within the object storage environment based on semantics of the one or more policies, wherein a virtual namespace maps each object to at least one of the policy rings based on the one or more policies assigned to the object; wherein the virtual namespace is scalable with a number of the plurality of objects stored within the object storage environment; and wherein the locating uses one or more probabilistic data structures; and wherein the probabilistic data structures provide object-level granularity with respect to assigning policies to the plurality of objects stored within the storage environment.