docs: Document BORG_FILES_CACHE_SUFFIX environment variable

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Luke Dashjr 2020-10-23 00:07:37 +00:00
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@ -56,6 +56,10 @@ General:
BORG_REMOTE_PATH
When set, use the given path as borg executable on the remote (defaults to "borg" if unset).
Using ``--remote-path PATH`` commandline option overrides the environment variable.
BORG_FILES_CACHE_SUFFIX
When set to a value at least one character long, instructs borg to use a specifically named
(based on the suffix) alternative files cache. This can be used to avoid loading and saving
cache entries for backup sources other than the current sources.
BORG_FILES_CACHE_TTL
When set to a numeric value, this determines the maximum "time to live" for the files cache
entries (default: 20). The files cache is used to quickly determine whether a file is unchanged.