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People talk about scale frequently as a single dimension (and usually volume as it relates to users) but that can be oversimplifying for many kinds of applications. For instance, as you are thinking about non-trivial partitioning schemes (like if there is high coupling between entities of the same kind - as you see in graphs) is when you should consider alternatives like the Bigtable-inspired DBs, since those are (relatively) more batteries included for you.

> It’s funny to write this. The Internet contains at least 1 (or maybe 2) meaty blog posts about how this is done

It would’ve been great to link those here. I’m guessing one refers to StackOverflow which has/had one of the more famous examples of scaled Postgres.




I was thinking of the Instagram post years ago. And maybe the Instacart one.





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