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I wonder if Twitter is still running on Ruby on Rails. Those were the days...

In case this isn’t sarcasm: it isn’t.

For those who don’t remember that era: https://www.theregister.com/2012/11/08/twitter_epic_traffic_...

Shopify does somehow to this day.

The “fail whale” was a thing years before Elon’s acquisition.

The fail whale was a thing in the late 2000s, when Twitter was famously still on Ruby on Rails. After the early 2010s rewrite in Scala (?) it was pretty much stable.