Disk backed Dict?

Not big, maybe 100mb at most. I guess its indeed not too hard to implement this. However if there is an existing solution I would prefer that. Also there are some implementation issues I am unsure about:

  1. For storage of arbitrary julia objects, JLD is the only option I can think of. But I don’t know if there is a way to modify a value in a JLD file. The only way I am aware of is delete the file and save the modified version.
  2. I am not sure how to do the locking of a path that belongs to an active DiskBackedDict.