Date: Tue, 25 Jul 2006 03:04:21 +1000 From: Mikhail Goriachev <mikhailg@webanoide.org> To: Bill Moran <wmoran@collaborativefusion.com> Cc: freebsd-questions@freebsd.org Subject: Re: Mail system Suggestions Message-ID: <44C4FD95.8080308@webanoide.org> In-Reply-To: <20060723082433.0f15744d.wmoran@collaborativefusion.com> References: <20060722054711.9B5B.GERARD@seibercom.net> <005601c6ad8c$81193f60$0200a8c0@satellite> <a25afc300607221305o826052erf445fd177a55795c@mail.gmail.com> <44C31024.6070002@webanoide.org> <20060723082433.0f15744d.wmoran@collaborativefusion.com>
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Bill Moran wrote: > > I don't know enought about Dovecot in particular to say whether or not > the speed is _purely_ the result of caching (and being written in C). > > But I can state a couple of reasons why the server-side cache helps. > Keep in mind that IMAP is specifically designed as a clieng/server > protocol. I generally have the same mailbox open from three computers: > my home, my work and my laptop. When changes are made from one of these, > the other two need to get synchronized. Like most people, I try to > keep my mails organized into folders that don't get too big, but I still > end up with 1000s of mails in each folder. > > Dovecot keeping a cache/index on the server side allows Dovecot to quickly > provide information when the clients want to sync up. When a mail client > is first started, it needs to do the equivalent of "send me a list of all > the emails in this folder". If Dovecot needs to scan each and every message, > it can be pretty slow, but if it has an index maintained that it can more > or less just ship as is, that's much faster. How often these types of > "overall sync" operations occur under normal usage, I don't know. > > While I'm not an expert, I believe that Courier maintains indexes as well. > Fair enough, thanks for your thoughts. I guess I'll give dovecot a spin when the right time comes (apparently it's still in beta). Meanwhile I'll stick with courier-imap. Cheers, Mikhail. -- Mikhail Goriachev Webanoide Telephone: +61 (0)3 62252501 Mobile Phone: +61 (0)4 38255158 E-Mail: mikhailg@webanoide.org Web: http://www.webanoide.org PGP Key ID: 0x4E148A3B PGP Key Fingerprint: D96B 7C14 79A5 8824 B99D 9562 F50E 2F5D 4E14 8A3B
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