Investigate caching methods

[dankolbman]

I've started investigating some different methods of caching to improve the response throughput and speed of the dataservice.
Blanket caching of everything is of course exceptionally quick, especially if done in nginx, but likely isn't a solution for anything that is being changed.
Instead, we may wish to focus on caching serialized objects. most of the time spent in a request is during the deserialization from the database, and the serialization back to json. We will be able to recognize solid performance increases if we can figure out how to cache the entity level json serializations and do the minimal amount of work combining and formatting them during a request.