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A pattern where you check for and then execute any necessary migrations on initialization of a Durable Object would actually work pretty well I think - presumably you can update the code for these things without erasing the existing database?

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Ah yes, that would work pretty well! You'd have to be able to guarantee any migrations can run within the timeouts, but at a per-tenant level that should be very doable for most cases. Not sure why I didn't think of that approach - great idea.

I might have to try this out now.

I think those SQLite databases are capped at 1GB right now, so even complex migrations (that work by creating a new temporary table, copying old data to it and then atomically renaming it) should run in well under a second.

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