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by nicoburns 1824 days ago
It looks like this will support more than 500 by calling the batch API repeatedly in a loop (the bulkWriter API is likely doing similar).

If you really want to address the issue of a growing userbase I'd highly recommend moving off of Firestore as soon as possible. It's really very inefficient at things like bulk updates (e.g. whereas in a SQL database you could use an UPDATE WHERE, in Direstore this is impossible without first reading every document than writing it back)