I recently used it to implement a BFF (backend for front-end) for a mobile app on a "legacy' system. I spent about 3 normal, non-crunch days to code and write ~

I recently used it to implement a BFF (backend for front-end) for a mobile app on a "legacy' system. I spent about 3 normal, non-crunch days to code and write ~20 endpoints (most with 2-4 verbs) w/validation and tests that spanned over 25 models. Also had about a dozen context-sensitive permissions to account for as well in a DRY manner (eg: user must be of type X and have plan Y or return a 403). Normally not a "big" framework kinda dev but I'm quite proud of how clean and well organized the resulting code was. Adding additional endpoints in the future can be done in minutes or hours at most, since all the pieces are now there. I don't have any experience beyond that though, and I've never started a brand new product from the ground up with it, but it made my life super easy last week.