Two boundaries on this canvas leak duplicates
A medium Pipeline Design mock interview question on DataDriven. Practice with AI-powered feedback, real code execution, and a hire/no-hire decision.
- Domain
- Pipeline Design
- Difficulty
- medium
Interview Prompt
Two boundaries on this canvas leak duplicates. The application boundary has no atomicity (the order service writes to Postgres and publishes to Kafka in the same handler, the section's named most common production bug in event-driven systems). The downstream order_analytics destination is plain Postgres without a primary key, so Kafka redelivery double-counts. Pick the section's named building block per boundary; rolling a custom 2PC is forbidden.
How This Interview Works
- Read the vague prompt (just like a real interview)
- Ask clarifying questions to the AI interviewer
- Write your pipeline design solution with real code execution
- Get instant feedback and a hire/no-hire decision