Talking about killer app or general pattern, I think this recent article is interesting:
[https://chameth.com/2018/12/09/over-the-top-optimisations-in-nim](https://chameth.com/2018/12/09/over-the-top-optimisations-in-nim)/ * Prototype quickly in a clean high level language - already faster than most interpreted languages * Optimize and get even faster but needs deeper understanding * Bypass gc and get even more efficient * Optimize to the nth degree like you would with C All this without having to switch to another language. This is the typical use case of any app that succeeds and needs to scale and you can do it all in Nim. And we haven't gotten into macros yet.
