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Concept guides/Consistency and money/Replication & consistency

System designConsistency and money

Replication & consistency

Hard3 min read

Questions it teaches

Shared grocery list that syncs between phonesEasy30 min Read replica staleness routingMedium40 min Hot stories rankingMedium40 min Multi-master preferences conflict resolutionMedium35 min Multi-region read scalingMedium40 min Global username uniqueness at signupMedium35 min S3-compatible object storageMedium40 min Cache invalidation at scaleMedium45 min

Related

Consistency and money Messaging and streams Data modeling and storage Scale and caching Real-time systems Backend internals Reliability and failover

Builds on: Messaging and streams

Designing team chat3 min Real-time personalization4 min

Builds on: Data modeling and storage

Designing a parking lot4 min Designing a pastebin3 min

Related: Scale and caching

Connection pool proxy3 min Connection pooling proxy (gateway)3 min

Related: Real-time systems

Short polling for presence4 min URL routing3 min

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