 Journaling - redolog?
So doesn't the production "Network" version of Zimbra use imap event journaling to handle replication to a "hot" backup server?
I seem to remember that from one of the architecture docs.
If so I'm assuming that there is some sort of other services running in the background replicating each event to the designated hot backup server.
If this is at all on track it would seem that this could be duplicated with the OSS so long as the journal is kept in an accessible DB.
It would seem to me that it is a matter of:
- check journal for event
- copy message from filesystem spool by message-id to hot backup server
- run the same imap event on the remote server.
I could be way off base. I'm very curious about this though as I had hoped to develop a java based imap proxy with journaling for generic imap replication recently. Something that I could stick in front of Cyrus. Zimbra seems to be the solution for this though if we can figure out the replication. |