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System Design at Twitter

Twitter (now X) system design interviews focus on social feeds, distributed ID generation (Snowflake), real-time content delivery, and high-throughput content systems. They pioneered many widely-adopted distributed systems patterns.

3 guides available•Interview focus: Social feeds, distributed ID generation (Snowflake), photo/media apps, and content delivery.

Twitter System Design Interview Guides

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...

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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...

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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...

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