ApsaraMQ for Kafka:What are the number of topics, groups, and partitions if an existing instance is purchased based on topic specifications?

ApsaraMQ for Kafka no longer supports the purchase of instances based on topic specifications.

The following items describe the number of topics, groups, and partitions of an instance that is purchased based on topic specifications:

• Topics:
  • The maximum number of topics or partitions varies based on your traffic specification.
  • Each time you purchase an additional topic, the number of partitions is increased by 16. For example, you have purchased an instance that has 50 topics, a maximum traffic rate of 20 Mbit/s, and 400 default partitions. After you purchase another 10 topics for this instance, 160 additional partitions are available for the instance, and the total number of partitions is increased to 560.
  • The number of topics that you can create in a Professional Edition instance is twice the number of topics that you purchase. For example, if you purchase a Professional Edition instance that provides 50 topics, you can create 100 topics in the instance.
• The number of groups that you can create in an instance is twice the number of the topics that you purchase. For example, if you purchase an instance that provides 50 topics, you can create 100 groups in the instance.
• The ratio of purchased topics to increased partitions is 1:16. Each time you purchase an additional topic, the number of partitions is increased by 16. For example, you have purchased a Standard Edition (High Write) instance based on the 2xlarge traffic specification that provides 50 topics and 400 default partitions. After you purchase another 10 topics for this instance, 160 additional partitions are available for the instance, and the total number of partitions is increased to 560.