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In a document store, what does it even mean to create a container without a partition key? The document store has to partition the data somehow, and doing so implicitly sounds dangerous to me since all you're doing is creating a hotspot on one of the partitions...

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It essentially means everything goes on the same partition, which for the scenario in question was exactly what we wanted. Not everything needs to be hyper-scalable, and usually there’s an amount of overhead associated with making things so. In a demanding SLA sort of environment an extra hop to a new physical partition can mean the difference between getting paid or not.

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