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make edits that a commenter apparently didn't realize they could make. this is a wiki..

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Joey Hess 2013-07-31 12:31:30 -04:00
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@ -5,12 +5,13 @@ to retrieve the file's content (its value).
Multiple pluggable key-value backends are supported, and a single repository Multiple pluggable key-value backends are supported, and a single repository
can use different ones for different files. can use different ones for different files.
* `SHA256E` -- The default backend for new files. This allows * `SHA256E` -- The default backend for new files, combines a SHA256 hash of
the file's content with the file's extension. This allows
verifying that the file content is right, and can avoid duplicates of verifying that the file content is right, and can avoid duplicates of
files with the same content. Its need to generate checksums files with the same content. Its need to generate checksums
can make it slower for large files. can make it slower for large files.
* `SHA256` -- Does not include the file extension in the key, which can * `SHA256` -- Does not include the file extension in the key, which can
lead to better deduplication. lead to better deduplication but can confuse some programs.
* `WORM` ("Write Once, Read Many") This assumes that any file with * `WORM` ("Write Once, Read Many") This assumes that any file with
the same basename, size, and modification time has the same content. the same basename, size, and modification time has the same content.
This is the the least expensive backend, recommended for really large This is the the least expensive backend, recommended for really large