No, I mean exactly that, but tenant_id sounds like a SaaS or a Shopify. Their pods don’t have this kind of scale to begin with, the datasets just don’t have mo

No, I mean exactly that, but tenant_id sounds like a SaaS or a Shopify. Their pods don’t have this kind of scale to begin with, the datasets just don’t have more than a few billion entities. Assuming there’s a “nice natural sharding key” at all already limits scope to a subset of applications, most of which you can stick inside a single instance, rendering the point moot.