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.
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.