title: Using MongoDB and Redis together?
body: <p>We started with Redis, storing active data, logged in users, etc. We're using some pubsub too for realtime data passing.</p>
  
  <p>Recently we added Mongo to fit our geo spatial needs, and it seems great for non-active data too. </p>
  
  <p>How should these two work together? It is dumb to use both? Is it dumb to pass chunks of data from mongo to redis when they becomes active? </p>
  
  <p>Our thoughts were that we might store everything in mongo but then pass user data from mongo to redis when a user is active and the data is likely to be accessed. I know Mongo does some cacheing like this on its own, we are new to both of them and just want to know how they should be used together, if at all.</p>
  
  <p>Thanks!! </p>