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I think https://www.cars.com/ is largely done with LiveView now.

Its really fast. Their site used to be really slow. Big change

They rewrote the whole back of house system from Java to elixir and apparently it’s been a huge success.

I tried to look around, but is there a blog or something detailing before/after/why etc.? Should be very interesting read..

One of them gave an elixir conf talk about how they built an elixir team[1] and this one from 2022 which isn't online yet[2]. I know a little more about it from talking to them, but couldn't accurately describe the transition from memory.

[1] https://www.youtube.com/watch?v=zKifFG4i-bY

[2] https://2022.elixirconf.com/speakers/zack-kayser

This is probably the most comprehensive thing online[0]. Not an article but you can read the transcript of the podcast episode[1].

0: https://smartlogic.io/podcast/elixir-wizards/s7e2-jose/

1: https://smartlogic.io/podcast/elixir-wizards/transcripts/s7e...

Elixir has some case studies written up on its official site.

https://elixir-lang.org/cases.html

Also there's https://elixir-companies.com/en

Discord uses elixir quite a bit. I believe pagerduty as well.