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> Wonder how scalable the code base really is.

Are you for real? This isn't an hypothetical codebase. This is slack, used by millions of people.

I get it, they're using boring tech, but come on.

You can scale even a stack made out of machine code if you just keep throwing money at it. I guess I should have phrased the question, how maintainable and tech debt free the code base is. It's obvious that scalable is in how many people are served, is apparent from the context. I didn't think there was ambiguity in that.

It’s a valid point. We might discover FTL and suddenly slack has to work at the federation level and serve trillions of people. This is such a poor design and won’t scale at that point.

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