T

Master Twitch

Low-Latency Live Video

100M+
Active Users
10M concurrent
Scale
99.9%
Uptime
Start HereEasy

Design Channel Management

Manage streamer channels and settings.

ProfileSettingsSchedulePanels
Start Problem

All Problems

9 challenges to master Twitch's architecture

CoreHard

Design Live Video Delivery

45 min

Deliver live video with low latency.

HLS/DASHLow LatencyEdge Transcoding+1 more
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Real-timeMedium

Design Chat System

35 min

Build real-time chat for streams.

WebSocketRate LimitingModeration+1 more
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ContentMedium

Design Clip System

30 min

Create clips from live streams.

Video CuttingStorageSharing+1 more
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FintechHard

Design Subscription System

40 min

Handle channel subscriptions and payments.

Recurring PaymentsTiersEmotes+1 more
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MLHard

Design Discovery System

40 min

Recommend streams to viewers.

CategoriesPersonalizationTrending+1 more
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ContentMedium

Design VOD System

35 min

Store and serve past broadcasts.

RecordingProcessingStorage+1 more
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SocialMedium

Design Raid/Host Feature

30 min

Send viewers to another stream.

Viewer TransferNotificationsChat+1 more
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EngagementMedium

Design Drops System

35 min

Reward viewers for watching streams.

Watch TimeGame IntegrationInventory+1 more
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AnalyticsMedium

Design Stream Analytics

30 min

Real-time stats for streamers.

Viewer CountChat ActivityRevenue+1 more
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