Interactive Kafka failure lab

Step through three events for the same order. Watch retry routing, DLT quarantine, and version-aware processing.

Deterministic simulation
Retry delays are simulated as logical ticks, not wall-clock broker timing. No Kafka server is contacted.
Ordering: no event has overtaken another yet.
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Logical tick
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Deliveries
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Retry schedules
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Processed
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DLT cases

MAIN TOPIC

RETRY TOPIC

DEAD LETTER

Consumer activity log

Ready. Click Next tick to begin.