Kafka - Consumers
You want to subscribe a Kafka consumer to all topics starting with "logs-" dynamically, without listing each topic name. Which approach correctly achieves this?
You want to subscribe a Kafka consumer to all topics starting with "logs-" dynamically, without listing each topic name. Which approach correctly achieves this?
hard📝 Application Q15 of 15
Step-by-Step Solution
Solution:
Step 1: Understand dynamic topic subscription
Kafka consumers can subscribe to topics matching a regex pattern usingsubscribe(Pattern).Step 2: Identify correct method for pattern subscription
Usingconsumer.subscribe(Pattern.compile("logs-.*"))subscribes to all topics starting with "logs-" automatically.Final Answer:
Use consumer.subscribe(Pattern.compile("logs-.*")) to subscribe by regex pattern -> Option DQuick Check:
subscribe() supports regex patterns [OK]
Quick Trick: Use regex pattern with subscribe() for dynamic topic matching [OK]
Common Mistakes:
- Listing topics manually instead of using regex
- Calling subscribe() multiple times incorrectly
- Using assign() which requires partitions, not topics
Master "Consumers" in Kafka
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