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Given this Kafka event-driven flow:

medium📝 Predict Output Q13 of 15
Kafka - Event-Driven Architecture
Given this Kafka event-driven flow:
Producer sends 3 messages: M1, M2, M3
Consumer processes messages asynchronously

What is the expected order of message processing by the consumer?
AMessages may be processed in any order depending on consumer speed
BM3, M2, M1 always in reverse order
CM1, M2, M3 always in order
DOnly M1 is processed, others are ignored
Step-by-Step Solution
Solution:
  1. Step 1: Understand asynchronous processing

    Consumers process messages independently and may handle them at different speeds.
  2. Step 2: Analyze message order in async processing

    Because processing is asynchronous, messages can be handled in any order, not necessarily the order sent.
  3. Final Answer:

    Messages may be processed in any order depending on consumer speed -> Option A
  4. Quick Check:

    Async consumer = Any order processing [OK]
Quick Trick: Async means order can vary in processing [OK]
Common Mistakes:
  • Assuming strict order always preserved
  • Thinking reverse order is default
  • Believing some messages get ignored

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