You work at ShopNation , a large e-commerce platform. You're using Pub/Sub to ingest clickstream data into Google Cloud for analytics. However, you’ve noticed that when a new subscriber connects to an existing Pub/Sub topic, they are unable to access historical messages . With a major yearly sale event coming up in two months , you need to implement a solution now so that any new subscriber added in the future can access the last 30 days of messages upon connection. What should you do?