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Module 10 · End-to-End Design DrillsDay 09645 min

Drill: Netflix-Style Streaming

Video ingest, encoding, CDN, recommendations.

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Day 096

Drill: Netflix-Style Streaming

Source
client
Encoder
service
Object store
datastore
CDN
edge
Player
client
Signal path
Streaming pipeline
Source
client
flow
Encoder
service
Encoder
service
flow
Object store
datastore
Object store
datastore
flow
CDN
edge
Memory hook

Netflix-Style Streaming: video ingest, encoding, cdn, recommendations

Mental model

compose the pieces into a design story

Design lens

Encoding cost vs quality.

Recall anchors
Ingest/EncodeStorageDelivery

Why it matters

Streaming platforms ingest source video, encode into many bitrates and codecs, and distribute via global CDNs. ABR (adaptive bitrate) lets clients switch by network quality. Personalization runs on top of cached content.

Deep dive

Encoding: per-title optimization picks bitrate ladder.

ABR: HLS/DASH manifest with multiple renditions.

Multi-CDN: failover and pricing leverage.

Personalization: precomputed rows + online ranking.

Demo / scenario

User starts watching.

  1. Client fetches manifest.
  2. Adaptive segment selection by network.
  3. CDN serves segments; rare misses go to origin.
  4. Watch events feed recommendation pipeline.

Tradeoffs

  • Encoding cost vs quality.
  • More renditions = better adaptation but bigger storage.
  • Multi-CDN ops complexity.

Diagram

Source
Encoder
Object store
CDN
Player
Streaming pipeline.

Mind map

Check yourself

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Sources & further reading

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