Design an Ad Click Aggregator

Advanced · 27 min read · High-Level Design, Case Studies: Advanced

Stream aggregation, exactly-once counting and reconciliation.

This is an Advanced lesson, part of Premium. What it covers:

• 1. Clarify the problem
• 2. Requirements
• 3. Capacity estimation
• 4. API
• 5. High-level design
• 6. Deep dives
• 7. Failure modes
• 8. Trade-offs summary
• 9. What interviewers look for
• Interview questions
• Practice
• Further reading

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