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Don't you have to scale your api too ?

I have (limited) experience scaling long-lived websocket connections and it _sucked_. It is _way_ easier to scale out little Node servers that are "stateless" than it is to ensure that Client A is connected to Socket A.

I would much rather scale out my REST/Graph/RPC API instead of having to scale out a WS API.

Yes, but now you have to scale both the data layer logic and view layer logic when doing server side rendering.

So now it's two times the hassle, two times the money spent

99% of the time no one runs into scaling issues and worrying about it is premature optimisation. I have to remind myself that all the time.

And no, same hassle, same money spent. Thought about from the start server-side rendered pages are almost as cacheable as API responses will be. If you can't cache you're in for a world of expense at scale whichever way you go.

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