One Earthquake, Ten Thousand Tweets
A hard Pipeline Design mock interview question on DataDriven, with an AI interviewer who asks follow-up questions and a hire or no-hire decision at the end.
- Domain
- Pipeline Design
- Difficulty
- hard
- Seniority
- L5
Interview Prompt
We detect breaking events like earthquakes and fires from the full Twitter firehose and 1 million other data sources, where one event surfaces as thousands of simultaneous posts. Within 60 seconds, we send a single validated alert to our clients. Design the event detection and deduplication pipeline, which today misses multi-source signals.
Summary
The firehose is on. Separate signal from noise.
How This Interview Works
- Read the vague prompt (just like a real interview)
- Ask clarifying questions to the AI interviewer
- Draw your pipeline on the design canvas: sources, transforms, storage and checks
- Answer the interviewer's follow-up questions, then get a hire or no-hire decision