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Feature #13983

open

Optionally no-op flush requests when journal + cache are enabled

Added by Jason Dillaman over 8 years ago.

Status:
New
Priority:
Normal
Assignee:
-
Target version:
-
% Done:

0%

Source:
other
Tags:
Backport:
Reviewed:
Affected Versions:
Pull request ID:

Description

If both the journal and cache are enabled, it is safe to no-op flush requests since read-after-write consistency is provided by the cache and crash consistency is provided by the journal. Provide a new config option for specifying a throttled flush interval in the above case -- this determines a how many seconds of data could be lost post crash. This will help reduce the speed degradation of journaling if a user doesn't mind losing X seconds of data.

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