Deploying Rails book

Hi all,

With the fast changing rails, it is always hard to know how up to date
Ruby books are.
As far as I could tell, Rails recipes is basically obsolete and
Advanced Rails recipes is a better choice. But what about the Rails
Deployment book from Pragmatic Bookshelf from May2008. Would you say
it's still up to date?

Cheers,

It doesn't talk about mod_passenger, but is an excellent book for
deploying using mongrel (alone or in cluster configuration) and it has
many good tips.