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Review Kafka fundamentals and concepts.

SQLhard0.3 min readPremium
Frequency
Low
Asked at 1 company
Category
487
questions in SQL
Difficulty Split
130E|271M|86H
in this category
Total Bank
1,863
across 7 categories
Asked at these companies
Expedia
Key Concepts Tested
joinpartition
Expert AnswerPremium
66 wordsInterview-ready
Kafka: topics, partitions, offsets; producers/consumers; consumer groups; brokers; replication; retention. At-least-once vs exactly-once. Partition key for ordering. Rebalance on consumer join/leave. Offset management: auto vs manual commit. Use for: event streaming, log aggregation, activity tracking. **Why it matters**: Design choices compound at scale—wrong approach can cause 100× overhead. **Scalability trade-offs**: Profile before optimizing; validate on sample then full....
The complete answer continues with detailed implementation patterns, architectural trade-offs, and production-grade considerations. It covers performance optimization strategies, common pitfalls to avoid, and real-world examples from companies like Expedia. The answer also includes follow-up discussion points that interviewers commonly explore.

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