Does anyone know what is the maximum of subscriber nodes with PostgreSQL 11 logical replication ?
Postgresql – Maximum number subscribers node in PostgreSQL logical replication
postgresqlreplication
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Best Answer
The limit built into PostgreSQL is 262143 (218 - 1).
So in theory you could bump up required parameters and have 200k logical rep subscribers.
In reality, you will start hitting performance issues much below this.
For the parameters - see documentation and also see this SQL query:
I get this: