[ventu]

If your having several instances load-balanced, you can easily update your site, one instance after another. No server runs mono-process. What do you think?

[hbbio]

If it works like this, it's a great feature. But what's happening when in an update the database structures are changed?

[ventu]

There's no easy answer to your question. Although Opa raises warnings when it detects that the databases your accessing/trying to modify have changed, I guess you'd have to think of a migration process anyway.

What is your best practice so far? (and your expectations :p)