• RisingWave Data Retention Policies are designed to include mechanisms for obsolescence of stored data.
• The obsolescence mechanism works by setting a fixed period for data storage, typically for 1 or a few days.
• After the specified period, the data is automatically removed from storage to ensure compliance with the retention policies.

Example:

# Setting data retention period to 1 day
retention_period = 1

# Obsolescence mechanism implementation
if data_storage_time >= retention_period:
    remove_data_from_storage()