nik600 writes:
I think that there are 2 way:- usage of S3 or other object-storage service as a back-end of courier --> anyone has considered this possibility ? --> is there any plugin of extension of courier in this direction ?
Nope. Courier-IMAP expects to read mail from the filesystem. Something that looks and acts like a filesystem has to be there.
- usage of a distributed file system (glusterFS or similar) with support of many active-active nodes--> this is already working (i've tested) but too poor performance--> what about a proxy that split requests between read and write, read requests goes to a geo-replicated node with higer performances and write requests goes to an active-active note with lower performances
99% of what an IMAP server does is reading mail. The only time an IMAP server writes anything of substance, to the mailbox, is when you save a draft message, from your mail client, in the drafts folder.
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