Date: 01/14/05 (Algorithms)    Keywords: no keywords

Hi All,

I am trying to figure out an efficient way to update a file on the server from a client.
What I have got is a huge file which clients download from the server. They can then
make changes to it as they like and then upload it from time to time. What I want is a
way to update the file on the server without sending out the whole file as the time cost
over the network is quite a bit.

I tried sending and comparing checksums for file chunks but the updation is non-trivial
( A single addition/deletion/replacement and change checksums for all the following
chunks).

Any suggestions?

Thanks,
J

Source: http://www.livejournal.com/community/algorithms/44447.html