Deployment story and expected performances are the two big questions for me.

i'd consider using elixir only if it made it easier to build and deploy fail safe architecture , at good performance.

Releases: unbelievably good deployment story.

> be me

> build a release (see distillery)

> put it on a machine (don't care how, but I like building AMIs with packer + ansible)

> build a systemd unit

> never go down because fault tolerance and good supervision strategy

Performance: so so good, and horizontal linear scaling is basically the holy grail and the Erlang VM makes it trivial.