We just have experienced a massive hit (traffic) on our site due to a campaign and have noticed that the craft caching solution is not really working well for the templates/html. We are wondering if there is anything else and how we can set it up to cache to MEMCACHED or any other system instead of the database.
I found some interesting posts on Is there a way to override the template caching system?
PS also the render controller is not performing and is taking over 1s to complete. Any suggestions.