Design
Podcast Platform
Design a podcast platform supporting show subscriptions, episode downloads, playback position sync, and recommendations.
This is a Low-Level Design (LLD) problem. New to LLD vs HLD? Start here.
01 - Why interviewers ask this
Cross-device playback sync is the interesting part — interviewers check whether you resolve conflicting positions from multiple devices with a simple, defensible strategy.
02 - Where this system exists in the real world
You interact with this design every day.
Spotify / Apple Podcasts platforms
Audiobook apps with cross-device sync
Corporate training audio/video platforms
03 - What you'll master
Solve this once. Know it forever.
Sync playback position across devices
Model subscriptions and auto-download rules
Design fan-out for new-episode notifications
04 - What you'll design
6 functional · 2 non-functional requirements.
Subscribe to a podcast show to get new episode notifications
5 more requirements inside
Sign in to unlock the full brief and start designing
05 - Companies that ask this
You may face this exact question in your next interview.
Ready?
Open the canvas.
Design it yourself.
See all requirements, use staged hints, run your code, and compare with community discussions - all on the same canvas.