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The more I think about it the worse it gets.

Because we don’t want everything to fall over when one machine goes down we need at least 3 machines (for raft). So if our traditional db would have 500 GB of data we now need 3 machines with 500 GB of ram running at all times. That is an epic waste of money. Millions per year to run ? And you could store it in a db for a couple of dollars.

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their use case is mostly-never-retrieved images!

they store the index of files only in memory. and have the entire build time to fetch build-1 images to get ready for the diff.

it's much easier than most use cases

So all of this ram is being used and is only accessed sporadically if at all. This is not good. Sounds like you could implement the entire thing on a micro db instance (redis or a regular db) with no raft or any other custom implementation or messing.

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