Consumer lag
On This Lesson 4 topics
This lesson is planned. The outline below lists the topics it will cover. The full lesson has not been published yet.
In this lesson
monitor lag and act with thresholds.
Planned topics
- Lag is how far a consumer group is behind the log head, in messages or time.
- Time lag matters more to users than message count.
- Alert on sustained growth and on age, with a runbook per alert.
- Lag has causes: slow handler, bad message, rebalance storm, downstream failure.
Draft outline details
Demonstration
an alert table: warning at 2 min time-lag for 10 min, page at 10 min or growing for 30 min; each with the first three actions.
Check your understanding
Why alert on time lag?
Show answer
It reflects delay as users see it, unlike raw counts.
Practice
Apply this lesson with the module's lab, exercises and quiz.
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