dovecot: keep mailbox index only in memory #632
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missytake
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hpk42
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removing dovecot.index.cache files on nine yields massive reduction:
PREVIOUS: 61GB free Use 90%
NOW: 141GB free Use 67%
let's merge this PR, and see if there are any adverse effects which i doubt because even "cmdeploy bench" got faster.
It could only be that larger mailboxes get slower but we don't want large server-mailboxes anyway, and they are not super-large.
Co-authored-by: holger krekel <[email protected]>
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Looks like this at least broke Seen flag synchronization for multi-device: #640 |
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According to research by @hpk42 and @feld, this could save a lot of storage. login seems to take 0.34 seconds longer if the index is not cached on disk; not a big deal.
Deleting all the index files is not part of this PR, can be done manually once for servers which want to reduce storage.