Caching and cache-filling library, intended as a replacement
Description
Package Groupcache provides a data loading mechanism with caching and
de-duplication that works across a set of peer processes.
Each data Get first consults its local cache, otherwise delegates to the
requested key's canonical owner, which then checks its cache or finally gets the
data. In the common case, many concurrent cache misses across a set of peers for
the same key result in just one cache fill.
