Y

Master YouTube

Video Processing Pipeline

2B+
Active Users
500hrs/min upload
Scale
99.99%
Uptime
Start HereEasy

Design Comment System

Build threaded comments with moderation.

Nested CommentsPaginationModerationReactions
Start Problem

All Problems

9 challenges to master YouTube's architecture

CoreHard

Design Video Upload Service

45 min

Handle large video uploads with resumable uploads.

Chunked UploadResume SupportValidation+1 more
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DataHard

Design Video Processing Pipeline

40 min

Process uploaded videos into multiple formats.

TranscodingThumbnail GenerationQuality Profiles+1 more
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AnalyticsMedium

Design Creator Dashboard

30 min

Analytics dashboard for content creators.

Data VisualizationMetricsRevenue Tracking+1 more
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MLHard

Design Recommendation Engine

40 min

Recommend videos based on user behavior.

Watch HistoryCollaborative FilteringContent-based+1 more
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Real-timeHard

Design Live Streaming

45 min

Enable live video broadcasting.

RTMP IngestionLow LatencyChat Integration+1 more
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SearchMedium

Design Search Service

35 min

Search videos with filters and relevance.

Full-text SearchFiltersAutocomplete+1 more
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FintechHard

Design Monetization System

40 min

Handle ads and creator payments.

Ad InsertionRevenue SplitPayouts+1 more
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CoreEasy

Design Playlist Service

25 min

Create and manage video playlists.

CRUDOrderingSharing+1 more
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TrustHard

Design Content Moderation

40 min

Detect and remove policy violations.

ML ClassificationHuman ReviewAppeals+1 more
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