25 lines
1.2 KiB
Text
25 lines
1.2 KiB
Text
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zsync is a file transfer program. It allows you to download a file
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from a remote server, where you have a copy of an older version of the
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file on your computer already. zsync downloads only the new parts of
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the file. It uses the same algorithm as rsync. However, zsync is
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designed for file distribution, with one file on a server to be
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distributed to thousands of downloaders. zsync requires no special
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server software - just a web server to host the files - and imposes no
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extra load on the server, making it ideal for large scale file
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distribution.
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Client-side rsync - zsync runs on the client side, thus
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avoiding the high server load associated with rsync.
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Rsync over HTTP - zsync provides transfers that are nearly as
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efficient as rsync -z or cvsup, without the need to run a
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special server application. All that is needed is an
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HTTP/1.1-compliant web server, so it works through firewalls
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and on shared hosting accounts.
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Handling for compressed files - rsync is ineffective on
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compressed files, unless they are compressed with a patched
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version of gzip. zsync has special handling for gzipped
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files, which enables update transfers of files which are
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distributed in compressed form.
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