[ninkendo]

I'm trying to think of the reason why NFS's latency is tolerable but S3's wouldn't be. (Not that I disagree, you're totally right, but why is this true in principle? Just HTTP being inefficient?)

I would imagine any implementation that used S3 or similar as a backing store would have to heavily rely on an in-memory cache for it (relying on the content-addressable-ness heavily) to avoid re-looking-up things.

I wonder how optimized an object store's protocol would have to be (http2 to compress headers? Protobufs?) before it starts converging on something that has similar latency/overhead to NFS.