System Design AI

Designs

Pick a system. Work through the problem. Compare your approach.

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Classic designs 1

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Company tags are community-reported. Counts on cards show how many people reported that design.

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6. Design a News Feed
Build a paginated feed that handles high-fan-out authors, fresh posts and visibility changes.
ClassicMedium
Caching Databases Streaming
+11
Privacy Distributed systems AWS DynamoDB Fan out Kafka News feed Pagination Redis Social Timeline
Worked design
Practice

Each design brings together the brief, practice, examples and discussion.