This is wild. I've spent the last three weeks working on this stuff for two separate clients. Important note if you're taking advice: cache-from and cache-to b

This is wild. I've spent the last three weeks working on this stuff for two separate clients. Important note if you're taking advice: cache-from and cache-to both accept multiple values. Cache to just ouputs the cache data to all the ones specified. cache-from looks for cache hits in the sources in-order. You can do some clever stuff to maximize cache hits with the least amount of downloading using the right combination.