Netflix System Design

A high-level streaming platform design covering video ingestion, CDN delivery, personalization, and resilience under regional traffic spikes.

Key components

• Client apps for web, mobile, and TV playback
• API gateway for session, catalog, and playback requests
• Metadata service for titles, manifests, and regional availability
• Recommendation pipeline fed by watch events and profile signals
• Video processing workers for transcoding and packaging
• CDN edge cache backed by regional origin storage

What usually breaks first

• A CDN cache miss surge can overload origin storage during major launches.
• Stale entitlement or metadata caches can expose unavailable titles or block valid playback.
• Recommendation pipeline lag degrades personalization quality even when playback remains healthy.
• Regional transcoding backlog delays new content availability.

FAQ

What is Netflix System Design?

A high-level streaming platform design covering video ingestion, CDN delivery, personalization, and resilience under regional traffic spikes.

Which components matter most in Netflix System Design?

Client apps for web, mobile, and TV playback, API gateway for session, catalog, and playback requests, Metadata service for titles, manifests, and regional availability, Recommendation pipeline fed by watch events and profile signals

What usually breaks first in Netflix System Design?

A CDN cache miss surge can overload origin storage during major launches. Stale entitlement or metadata caches can expose unavailable titles or block valid playback.