Consumer Groups

The Consumer Groups tab shows how messages are being consumed across topics in your cluster.

Overview

Lists all active and inactive consumer groups with:

• Group ID: the unique identifier for the consumer group.
• State: the group's current coordinator state, for example Stable or Empty.
• Members: number of active consumers in the group.
• Topics: the topics this group is consuming from.
• Total Lag: the difference between the latest offset and the last committed offset, summed across partitions. High lag means consumers are falling behind producers.
• Coordinator: the broker responsible for managing this group's membership and offset commits.

Lag Monitoring

Consumer lag is the most important operational metric in this view.

Lag	Interpretation
0	Consumer is fully caught up.
Low, stable	Minor delay, acceptable for most workloads.
High, growing	Consumer is falling behind. Investigate throughput or scaling.
High, stable	Consumer is processing at producer rate but has a historical backlog.

Warning

Continuously growing lag indicates the consumer cannot keep up with the producer rate. This may affect downstream API Products that depend on real-time data.

Reset Offsets

Select Reset offsets on a group to move its committed position, for example to replay from the beginning of a topic or to skip past a backlog the group can't work through.

Warning

Resetting offsets changes what the group's consumers read next. Replaying from the earliest offset re-delivers messages downstream consumers may have already processed.