@feld trkzw is by the same dude that did TokyoCabinet/KyotoCabinet. Very good shit (TokyoTyrant spoke HTTP and memcache's protocol over the same port) but he got fascinated with C++ so I haven't used the later ones. trkzw has Go bindings (that is, not a Go implementation, and CGO is useless if you are on Plan 9, but IPFS relies on a bunch of fluoridated Linux stuff anyway so CGO is necessary for them).