Tiered storage in RisingWave is designed to retain only necessary datasets in memory, helping to optimize storage usage.

The control of tiered storage in RisingWave can be managed through configuration settings. By adjusting the configuration parameters, users can control the tiered storage behavior based on their specific requirements.

For more detailed information on tiered storage and how to control it, refer to the RisingWave documentation provided by Yingjun: RisingWave Tiered Storage Documentation.