User-Space write-once Network Filesystem
is drawn from MoglieFS http://www.danga.com/mogilefs/ - but DoDoStorage it is much simpler.
With DoDoStorage you can store files - “Documents” in DoDoStorage speak. For each file you get an opaque “Document key” to retrive it. Stored Files are immutable - you can’t change or delete them. Every Document has an “category” whichs help to destinguish classes of Documents, a mime-type and a timestamp. It also has a set of arbitrary attributes.
DoDoStorage is meant to be accessed via an RESTful HTTP API.