Why not indeed. Many times all that is required is a few files written to /tmp atomically mv'd in place. Also, see git's design[0] and how it makes operations l

Why not indeed. Many times all that is required is a few files written to /tmp atomically mv'd in place. Also, see git's design[0] and how it makes operations like fetch/push completely trivial. Also, how redis reliably dumps and appends. [0]: http://git-scm.com/book/en/Git-Internals http://git-scm.com/book/en/Git-Internals