While re-reading the paper "Fast key-value stores: An idea whose time has come and gone" ai.google/research/pubs/…, I recalled "groupcache" from @bradfitz to speed up Chrome's dl.google.com; part of the "loan a Gopher out" program.

It was very influential for #golang 1/ groupcache github.com/golang/groupca… is a cache filling and caching library that lives within your application and talks to it's peers, exchanging values during cache misses aka "peer filling" and preventing thundering herds (that plague Memcached -- also from @bradfitz 💡) /2