On Mon, Mar 29, 2010 at 6:52 AM, Michael Poole <mdpo...@troilus.org> wrote: > SSTables aren't written on every update. Why would a B-Tree > implementation differ?
Because traditional B-trees are update-in-place, and although CouchDB has an append-only B-tree, it's limited to one writer at a time which is (one reason) why they get 6x less throughput than we do on writes.