We are using AWS elasticache service and trying to test our application in case of replica lags. Since Elasticache nodes are in our private subnets, I thought that I could add deny rule to master node's subnet inbound section and introduce replica lag to my test elasticache cluster. I could not succeed till now. Is that scenario possible?

CodePudding user response：

No, it's not possible. You don't have control over the communication between the ElastiCache nodes and you can't define security groups / network ACLs to limit it.