This topic answers frequently asked questions about topics in ApsaraMQ for Kafka.
Why are there limits on the total number of topics and partitions?
Why can't I reduce the number of partitions for a topic?
Why are messages sent to a topic unevenly distributed among partitions?
What are the storage types for topics?
How do I calculate the topic, group, and partition quotas for an instance purchased based on topic specifications?
Why is the partition creation time for a topic displayed as 1970 or "--"?
Why doesn't the total partition count for my instance decrease after I delete a topic?
Is the compact cleanup policy supported?
Automatic topic creation FAQ
Topic quota consumption when adding partitions
For an instance that is billed by topic, what are the included topic and partition quotas for a specific traffic specification?
How do I handle skewed topic partitions?
How do I handle inactive topics?