2.6.a Count Video Views at Large Scale

Requirements Clarification

• Users
  • Who will use the system?
  • How the system will be used?
• Scale
  • How many read queries per second?
  • How much data is queried per request?
  • How many video views are processed per second?
  • Can there be spikes in traffics?
• Performance
  • What is expected write-to-read data delay?
  • What is expected p99 latency for read queries?
• Cost
  • Should the design minimize the cost of development?
  • Should the design minimize the cost of maintenance?