dovecot - Jan 2012 - Director to keep redirecting users to the same server even after all sessions closed?

Hi there,

Just wondering how easy it would be to make the director continue to 
send a user to the same server (assuming it's still in the pool) for say 
90 seconds after they have last been active (ie lmtp or pop/imap)? 
Basically we are working in quite a heavily cached environment so it 
takes perhaps 60-90 seconds for our imap servers to properly flush to 
our network storage meaning if the user got put on a different server in 
that time we would see some issues. Presently we have fixed proxying, 
but I'd really like to use the director if possible to allow us to more 
easily add & remove servers.

Mark

On 30.1.2012, at 15.32, Mark Zealey wrote:
> Just wondering how easy it would be to make the director continue to send a
user to the same server (assuming it's still in the pool) for say 90 seconds
after they have last been active (ie lmtp or pop/imap)? Basically we are working
in quite a heavily cached environment so it takes perhaps 60-90 seconds for our
imap servers to properly flush to our network storage meaning if the user got
put on a different server in that time we would see some issues. Presently we
have fixed proxying, but I'd really like to use the director if possible to
allow us to more easily add & remove servers.
Already done, and enabled by default:

# How long to redirect users to a specific server after it no longer has
# any connections.
#director_user_expire = 15 min

I added this mainly to make sure that all attribute caches have timed out.