[aeyes]

The write activity every 5 minutes is standard Postgres checkpointing, the default value for checkpoint_timeout is 5 minutes. This is not limited to RDS.

Background processes like vacuum and analyze also write to WAL.

[ritmatter]

Thanks, I didn't know that. Why do you think the Debezium docs call out this behavior specifically for RDS (https://debezium.io/documentation/reference/stable/connector...)? I'm wondering if there is any difference for RDS vs other hosting methods.