Redis / Memcached ReST caching for an external service

Question here about caching data from calls to an external ReST API.

There is currently a ReST service set up to generate and retrieve some specific types of reports that the UI must consume. However, this service is not meant for high volume usage, or to be exposed to the public and these reports are fairly static. Possibly only changing every 10-20 minutes. The web application resides on a separate server.

What I would like to do is, using memcached or Redis, is when a request for data comes in from the UI to the web back-end, make a call from the web application back-end to the report server to get the specified report, transform the data to the appropriate format for the UI to consume, cache it with a timestamp, and return it to the UI so subsequent requests will be available in memory on the web applications back-end without having to re-request from the report server. I would also need to check this timestamp and make a new request if the cached report has been held for longer than the specified time. The data that will be cached is fairly minuscule just some smallish JSON objects with only a handful of values holding the information the UI needs and there is NOT a ton of these objects, I would not be surprised if they could all be easily stored in memory at once so the time stamping is the only invalidation that should be necessary.

I have almost 0 experience here when it comes to caching / memcached / Redis. Is there advantages to one or the other? Is something like this possible? How would I go about implementing this? Are there other options?

Appreciate the help!