Kafdrop - How to identify Kafka consumer lag
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Description
How users can utilize Kafdrop to identify Kafka consumer lag.
Step-by-Step Guide
1. Visit the Kafdrop web interface via a browser of choice
2. Select the topic of interest
3. Assess the Consumers' table for increasing lag
A steady increase of combined lag may indicate a higher number of messages are being produced to this topic than the consumer group can adequately process.
A rapid increase may indicate that your consumer group is experiencing more severe issues, for example some or all consumers are currently inactive or unable to process any messages.
Possible workarounds
Restart all (inactive) consumers.
If near real-time message processing is required, we recommend running additional consumers for this consumer group.