Meta System DesignSystem Design
Designing Facebook News Feed
Build a personalized feed system that ranks and delivers billions of posts to hundreds of millions of concurrent users.
Feed RankingCachingFan-outReal-timeMachine Learning
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4 articles
Deep-dive system design exercises focused on Meta-scale distributed systems. Learn to design News Feed, Messenger, Instagram, and WhatsApp from first principles.
Meta System DesignSystem Design
Designing Facebook Messenger
Architect a real-time messaging platform supporting billions of messages daily with presence, delivery receipts, and end-to-end encryption.
Real-timeWebSocketMessage QueueEncryptionPresence
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Designing Instagram Stories
Create an ephemeral content system that handles massive write spikes, global distribution, and automatic expiration.
Ephemeral ContentCDNWrite-heavyExpirationMedia Processing
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Designing WhatsApp at Scale
Engineer a messaging system optimized for reliability, offline sync, and extreme efficiency with billions of users worldwide.
MessagingOffline-firstDelivery GuaranteesErlang/BEAMEfficiency
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