What backend framework / technology, if any would provide a noticeable performance in loading / response times over latest Rails?
Provided that:
1) Rails project is fairly optimized (Pagespeed 90+ etc.).
2) No particular requirements, such as an extreme concurrency (not trying to replicate Discord etc.) or extra-large downloads or video streaming / video chat / deep learning, just a very fast website with a database and a backend that serves it.