4 ms·

Zsync: Client side Rsync over HTTP (e.g. HTTP diffs?)

• bengebre 17y ago
  zsync uses the rsync algorithm, but runs it on the client side, thus avoiding the high server load associated with rsync...All that is needed is an HTTP/1.1-compliant web server. although it does require one thing on the server side it seems: zsync downloads are offered by building a .zsync file, which contains the meta-data needed by zsync. This file contains the precalculated checksums for the rsync algorithm; it is generated on the server, once, and is then used by any number of downloaders. Interesting idea for reducing bandwidth on large, frequently polled files.
  • justinsb 17y ago
    I believe the metadata file could equally well be generated on the client side, as long as it's stored on the server.
• jacquesm 17y ago
  http://news.ycombinator.com/item?id=1013748 http://news.ycombinator.com/item?id=1013748
  • bengebre 17y ago
    Whoops. Thanks for pointing that out. Funny it came up just recently. I just happened upon it randomly today.