Caching

Hi,

i am pretty new at ruby on rails and such, and i was hoping someone
could give me a good reference at caching. i am on my way to creating a
dynamic/updating news website, and i was wondering where i could use
caching to bring better performance to the application. where i would
use page caching, where i would use fragmented caching, how to avoid
caching-mixups when needed sql calls, etc.
any good reference points i could start looking up/advice from the pros?
thanks,

josh

Agile Web D. with Rails covers this nicely.

See also

http://scottstuff.net/presentations/rails-caching/