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Many companies have products that operate at “scale”. They manage to do so with pretty boring techniques (sharding, autoscaling) and technologies (postgres, cloud storage).

Because of the insane blog driven tech culture, many of these teams get questioned by clueless leadership (who read these blogs) and ask why the company isn’t using cassandra / some other hot technology. And it always causes much consternation and wastage.

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Anyone wanting to introduce $new/$other language, database, library, deployment system, build system into a large enough system that doesn't solve any actual problem is a nightmare for someone working at this scale.

I don't mind the scale, I like it. I don't like having to fend off questions and complaints why we aren't deploying the latest shiny new thing in our core this week.

Well we use Cassandra (actually ScyllaDB) because Redis no longer cut it.

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