In our experience performance was consistently great , although Firebase is designed with millions of users in mind so we didn’t even scratch the surface of the beast. Our users are still impressed by how fast everything runs.
Read moreCan Firebase handle million users?
When to prefer firebase as your backend service Queries with limited sorting and filtering functionality can be performed with the firebase database. Cloud firestore assures automatic scaling and can handle 1 million concurrent connections and 10,000 writes/second.
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