Instance downtime may occur due to insufficient disk capacity. To avoid instance downtime and maintain service availability, Message Queue for Apache Kafka dynamically controls disk usage of each instance.
- If the disk usage is lower than 85%, expired messages are deleted at 04:00 every day.
- If the disk usage reaches 85%, expired messages are immediately deleted.
- If the disk usage reaches 90%, stored messages (expired or not) are deleted in the sequence that they were stored in the clients.