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Kafdrop - How to identify Kafka consumer lag

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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.

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