Kafka - Basics and Event Streaming
Given this Kafka event flow: Producer sends events to topic 'orders'. Consumer reads from 'orders'. What happens if the consumer is slow?
Given this Kafka event flow: Producer sends events to topic 'orders'. Consumer reads from 'orders'. What happens if the consumer is slow?
medium📝 Predict Output Q13 of 15
Step-by-Step Solution
Solution:
Step 1: Understand Kafka topic behavior
Kafka stores events in topics until consumers read them; slow consumers cause events to accumulate.Step 2: Analyze options based on behavior
Events accumulate in the topic until consumed matches this behavior; events wait in topic. Events are not lost immediately, producer keeps sending, and topic deletes old events only after retention period.Final Answer:
Events accumulate in the topic until consumed -> Option BQuick Check:
Slow consumer = event backlog in topic [OK]
Quick Trick: Slow consumer causes event backlog, not loss [OK]
Common Mistakes:
- Assuming events are lost if consumer is slow
- Thinking producer stops sending events
- Believing topics delete events instantly
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