[ndreckshage]

This mentions using Node/Express to help with concurrency. Ok. But this also mentions using 'isomorphic' javascript with React, and also not completely reliant on cache. React.renderToString (and all other isomorphic options -- Rendr, etc) are synchronous and slow. (rendering a large page in React w/ static data would take ~600ms; whereas the same page with with Mustache in Go for example would take ~30ms). End result, decreasing concurrency, and hurting overall performance.

OP - can you shed any light on how this is actually impacting your performance? Or maybe things that you had to do to get around the problem (ex - details of 'module level' cache with Redis etc).