Consider a chat system where one user is listening to multiple parent nodes within one chat conversation.

1. Group title
2. Group description
3. Messages

Does observing/listening to the 3 above mean that it adds up to 3 connections on the 200k concurrency limit? I can't seem to understand the proper definition of a concurrent connection.

CodePudding user response：

Each app (strictly speaking: each FirebaseDatabase instance) keeps a single connection to the Firebase Realtime Database server, no many how many listeners it has open.

Also see the Firebase FAQ, which says this about it:

A simultaneous connection is equivalent to one mobile device, browser tab, or server app connected to the database.