read
The maximum latency threshold that is allowed for read/write splitting. If the latency on a read-only instance exceeds the threshold that you specified, ApsaraDB RDS no longer forwards read requests to the read-only instance. If you do not specify this parameter, the default value of this parameter is retained. Unit: seconds. Valid values: 0 to 3600.
NOTE: Note If the instance runs PostgreSQL, you can enable only the read/write splitting feature, which is specified by ReadWriteSpliting.