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Discord, Comcast, Kiwi, Numberly...

https://www.scylladb.com/users/

And Kiwi survived the OVHCloud fire with Scylla without a problem

https://www.scylladb.com/2021/03/23/kiwi-com-nonstop-operati...

Apple, Netflix, Hulu, Uber, Instagram, Verizon, T-Mobile, AT&T, Walmart, Disney, Cisco, etc. etc. Honestly, I'd be surprised if there were a large, modern company that didn't have Scylla or Cassandra somewhere in its stack.

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