Check this: https://github.com/kirill-konshin/next-redux-wrapper and usage here:
https://github.com/zeit/next.js/blob/master/examples/with-re...
I'm pretty clear on how to use client-side react with redux, it's just the server side part that would include stuff like user authentication seems confusing to me so far, since I haven't seen a clear implementation of that yet.
Thanks!
The challenge seems to be that while the server side rendered bit would work fine - it could query a DB locally after authenticating a users cookie (for example)...
If the client routed to a page (not using the server rendering) - you would need to have duplicated code to handle how the client can fetch that data, as it cannot query the DB directly.