I've been advised that caching is not working on my site. I find this odd because I'm explicitly setting the following in my config:

Director::set_environment_type("live");

Shouldn't this enable caching by default?

I've just checked my headers using telnet and found this:

Cache-Control: no-cache, max-age=0, must-revalidate, no-transform

How can I set max-age to something more suitable for my site?

It looks like you can set cache age in the config file

HTTP::set_cache_age()

It's a good question and I can't say I've looked into the caching that much. What was the telnet command you used to reveal the cache info?

http://doc.silverstripe.org/framework/en/howto/cache-control

http://api.silverstripe.org/3.0/class-HTTP.html#_set_cache_age