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System Design at Meta
System Design at Meta
Meta (Facebook) interviews focus heavily on social graph systems, real-time messaging, content delivery at scale, and feed ranking algorithms. Their system design rounds test your ability to design products used by billions of people daily.
15 guides available•Interview focus: Social feeds, messaging systems, content delivery, real-time features, and collaborative tools.
Meta System Design Interview Guides
May 5, 2026•15 min•
senior
Complete Android System Design Interview Framework
Master Android system design interviews with this repeatable framework. Learn to clarify requirements, design layered architectures, and handle offline-first da...
Dec 25, 2025•22 min•
hard
How to Architect a Metrics Monitoring and Alerting System - Complete System Design Guide
Master metrics monitoring and alerting system design for your next big tech interview. Covers time-series data modelling, pull vs push ingestion, TSDB internals...
Dec 23, 2025•20 min•
medium
How to Design a Distributed ID Generator - Complete System Design Guide
Master distributed ID generator system design for your next big tech interview. Covers why auto-increment fails at scale, UUID trade-offs, Snowflake's 64-bit st...
Dec 20, 2025•22 min•
hard
How to Design a Real-Time Collaborative Editor like Google Docs - System Design Guide
Master collaborative editor system design for your next big tech interview. Covers Operational Transformation vs CRDTs with the math explained, WebSocket archit...
Dec 18, 2025•20 min•
hard
Android System Design: Design Reddit
A complete Android system design guide for designing Reddit — focused on what real interviews actually ask. Covers architecture, infinite feed with Paging 3 and...
Dec 8, 2025•18 min•
medium
How to Design a Pastebin Service - Complete System Design Guide
Master Pastebin system design for your next big tech interview. Covers unique key generation approaches and their trade-offs, content storage in object storage ...
Nov 28, 2025•22 min•
hard
How to Design a Real-Time Messaging System - Complete System Design Guide
Master real-time messaging system design for your next big tech interview. Covers WebSocket connection management, cross-server message routing with Redis Pub/S...
Nov 25, 2025•20 min•
hard
How to Design a Content Delivery Network (CDN) - Complete System Design Guide
Master CDN system design for your next big tech interview. Covers Anycast vs DNS-based routing, PoP architecture, multi-tier cache hierarchy, push vs pull CDNs,...
Nov 20, 2025•20 min•
hard
Android System Design: Design a Photo Sharing App
A complete Android system design guide for designing a photo sharing app like Instagram. Covers Clean Architecture, image loading with Glide vs Coil, multi-laye...
Nov 18, 2025•22 min•
hard
Android System Design: Design Uber's Mobile App
A complete Android system design guide for designing Uber's mobile app — written in a conversational interview style. Covers Clean Architecture, real-time locat...
Nov 15, 2025•20 min•
hard
How to Design a Distributed Metrics, Logging and Aggregation System
Master distributed metrics and logging system design for your next big tech interview. Covers push vs pull collection, Kafka ingestion pipeline, time-series dat...
Nov 10, 2025•18 min•
medium
How to Design Google Calendar - Complete System Design Guide
Master Google Calendar system design for your next big tech interview. Learn database schema design, the right way to handle timezones, how recurring events act...
Nov 4, 2025•22 min•
hard
Android System Design: Design a Notification Library
A complete Android system design guide for designing a notification library. Covers library API design, FCM push pipeline, BroadcastReceiver, Android Notificati...
Oct 20, 2025•22 min•
hard
How to Design Instagram / a Social Feed - Complete System Design Guide
Master Instagram and social feed system design for your next big tech interview. Learn the hybrid fan-out approach, how Instagram's real tech stack works, feed ...
Oct 10, 2025•20 min•
hard
How to Design a Chat System (Real-Time Messaging) - Complete System Design Guide
Master chat system design for your next big tech interview. Learn WebSockets, message delivery guarantees, Cassandra schema design, fan-out for group chats, pre...
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