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Chat Guides

Chat in System Design

2 in-depth guides covering how chat is used in real system design interviews. Learn when to use it, its trade-offs, and how to discuss it with confidence at companies like Meta, Google, Amazon.

Nov 28, 2025•22 min

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...

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Oct 10, 2025•20 min

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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Go Beyond Reading About Chat

Chat concepts show up across many system design interviews. Practice applying them in full interview simulations and get actionable feedback.

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Related Technologies

Websockets Cassandra Kafka Redis Distributed Systems Real Time

Companies That Test Chat

Amazon Apple Discord Google Meta Microsoft Slack Telegram Uber