Our clustering solution for IdP v3

[Manuel Haim]

> We haven't tried memcached but we don't think it would work for us in
> our environment. I think this is partly due to security concerns as our
> IdPs operate on fairly open public networks.

Just my two cents: You could use ipsec to tunnel a local port (or more)
to the machine(s) running memcached, so you don't have an unencrypted
connection.

Kind regards,
Manuel