Pika system design interview

Round 5 of 5 · 1 question reported

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Format
Onsite design
Heads-up
Reported in June 2025: real-time top 10 videos for users.

Questions Pika asks in this round 1

  • Design a top-K popular items systemSystem designLockedDesign a system that reports the K most popular items (most viewed videos, most played songs, hottest files) over sliding windows such as the last minute, hour and day, from a…
    Possibly retired