The infrastructure of an application is designed such that a producer sends data to a consumer via HTTPS. The consumer may sometimes take a while to process the messages, which can result in unexpected timeouts and cause newer messages not to be acknowledged immediately. To resolve this issue, a developer decided to introduce an Amazon SQS standard queue into the system. However, duplicate messages are still not being handled properly. What should the developer do to ensure that messages are durably delivered and to prevent duplicate messages? (Select TWO.)