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What is the main purpose of interactive queries in Kafka Streams?

easy📝 Conceptual Q11 of 15
Kafka - Advanced Stream Processing

What is the main purpose of interactive queries in Kafka Streams?

ATo create new Kafka topics dynamically
BTo write data back to Kafka topics
CTo read live state data directly from the Kafka Streams application
DTo monitor Kafka broker health status
Step-by-Step Solution
Solution:
  1. Step 1: Understand interactive queries concept

    Interactive queries allow reading live state from Kafka Streams state stores.
  2. Step 2: Identify the main use case

    The main use is to get real-time data from the app without extra databases.
  3. Final Answer:

    To read live state data directly from the Kafka Streams application -> Option C
  4. Quick Check:

    Interactive queries = read live state [OK]
Quick Trick: Interactive queries read live state, not write or monitor [OK]
Common Mistakes:
MISTAKES
  • Confusing interactive queries with writing data
  • Thinking it creates topics
  • Assuming it monitors brokers

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