[Solved] Given this Kafka consumer code snippet using an advanced pattern:consumer.subscribe(['orders']) for message in consumer: process(message) consumer.commit()What is the main benefit of calling consumer.... | Kafka

Kafka - Advanced Stream Processing

Given this Kafka consumer code snippet using an advanced pattern:

consumer.subscribe(['orders'])
for message in consumer:
    process(message)
    consumer.commit()

What is the main benefit of calling consumer.commit() after processing each message?

AIt speeds up message consumption drastically

BIt deletes the message from the topic

CIt ensures messages are not lost or processed twice

DIt pauses the consumer until manual restart

Step-by-Step Solution

Solution:

Step 1: Understand commit in Kafka consumer
Committing offsets marks messages as processed to avoid reprocessing.
Step 2: Effect of commit after processing
Committing after processing ensures no message is lost or duplicated on restart.
Final Answer:
It ensures messages are not lost or processed twice -> Option C
Quick Check:
Commit = Avoid duplicates/loss [OK]

Quick Trick: Commit after processing prevents duplicates [OK]

Common Mistakes:

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