You want to enrich a stream of user clicks (KStream) with the latest user profile data stored in a KTable. Which join operation should you use and why?
hard🚀 Application Q15 of Q15
Kafka - Streams
You want to enrich a stream of user clicks (KStream) with the latest user profile data stored in a KTable. Which join operation should you use and why?
AUse KStream-KStream join without a window to join clicks and profiles.
BUse KStream-KStream join with a 10-minute window to combine clicks and profiles.
CUse KTable-KTable join because both are tables.
DUse KStream-KTable join to enrich clicks with latest profile data without time window.
Step-by-Step Solution
Solution:
Step 1: Identify data types and join needs
User clicks are a stream (KStream), and user profiles are stored as a table (KTable).
Step 2: Choose appropriate join type
KStream-KTable join enriches stream data with the latest table data for matching keys without needing a time window.
Final Answer:
Use KStream-KTable join to enrich clicks with latest profile data without time window. -> Option D
Quick Check:
KStream-KTable join enriches stream with latest table data [OK]
Quick Trick:Enrich stream with table data using KStream-KTable join [OK]
Common Mistakes:
MISTAKES
Using KStream-KStream join unnecessarily
Adding time window to KStream-KTable join
Confusing KTable-KTable join for stream enrichment
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