How can you combine Kafka Streams with external databases to handle complex flows with transactional consistency?

hard📝 Application Q9 of 15

Kafka - Advanced Stream Processing

AWrite to the database asynchronously without transactions

BDisable Kafka Streams state stores and rely on database only

CUse Kafka Connect only for database writes

DUse Kafka Streams transactions with exactly-once and two-phase commit with the database

Step-by-Step Solution

Solution:

Step 1: Understand transactional consistency needs
Consistency requires atomic updates across Kafka and database.
Step 2: Identify pattern supporting this
Kafka Streams supports exactly-once with transactions and can coordinate two-phase commit with databases.
Final Answer:
Use Kafka Streams transactions with exactly-once and two-phase commit with the database -> Option D
Quick Check:
Transactional consistency = Exactly-once + two-phase commit [OK]

Quick Trick: Two-phase commit links Kafka and DB transactions [OK]

Common Mistakes:

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