从理论上讲,我们应该设置一个具有相应功能的触发器来比较该值并发出一个通知,然后由脚本进行监听,如tutorial所述.
但是,功能pg_notify在Amazon的RDS中不可用.除了每隔几秒扫描一次表更新之外,还有其他方法吗?
谢谢!
https://aws.amazon.com/about-aws/whats-new/2016/09/amazon-rds-for-postgresql-enhancements-support-for-new-minor-versions-logical-replication-and-amazon-rds-postgresql-as-a-source-for-aws-dms/
更多信息:
https://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/CHAP_PostgreSQL.html#PostgreSQL.Concepts.General.FeatureSupport.EventTriggers