[Dovecot] Limiting the size of index files

[Timo Sirainen]

On 15.11.2007, at 9.24, Steffen Kaiser wrote:

>> You could always just delete some of them manually. I guess it  
>> would be possible to make it drop data more aggressively. I'll add  
>> in my TODO.
>
> http://wiki.dovecot.org/MailboxFormat/Maildir
> "Dovecot stores keywords in the maildir filename's flags field  
> using letters a..z. This means that only 26 keywords are possible  
> to store in the maildir. If more are used, they're still stored in  
> Dovecot's index files."
>
> To "just delete" index files may mean that information is lost, too.
> I don't remember if there are data storred in the index files only.
>
> Wouldn't it better to make index files just that "index files", and  
> move other information into "control" files? You've designed  
> Dovecot to have separate index and control files already.

That was the plan, Maildir keywords are the only exception. I was  
also thinking about changing that some day so that it's not possible  
to set more than 26 keywords with maildir. I think this is currently  
pretty much a nonissue because keyword support is pretty bad with  
most IMAP clients and no-one has more than maybe 10 different keywords.

Anyway, by "just delete them" I meant dovecot.index.cache files, not  
the others. :)

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