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Tried Supabase but currently only use their Auth.

The server to database latency was very high(few hundred ms) whereas Planetscale DB in the same region gives sub 10ms.

Still great option for most projects that can do with these issues.

I struggle to imagine projects that can do with a db latency of several hundred ms? Something fully async maybe, any human interaction would be incredibly slow

And functions often have multiple db calls not just one. The latency would be a deal breaker no?

How far was the server from the Supabase instance?

I have a toy project with a server on Fly.io and the DB on Supabase within the same city

When sending API requests to the server, my end user latency was around 25ms-100ms (depending on the endpoint and how many DB calls it was doing)

Now with Supabase on Fly, that API latency is down to 17ms-70ms. But Supabase on Fly is still in alpha so it's not relevant for production yet

Same region, different provider. Also, their JS API has to do a round trip every time you set auth credentials on the backend, so it's at least 2 round trips for a single query.

same aws region as supabase instance using a single query.

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