1. Does a RocketMQ Instance Support Expansion?
A RocketMQ instance can be expanded. Log in to the RocketMQ Console, and locate the row of the instance. Click More > Expand to scale up the instance.
2. What Is the Maximum Retention Time for Messages?
Generally, messages will be retained if they are not consumed, and will be deleted only after they are consumed. But if the expiration time (TTL) is set, the TTL time shall prevail.