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Websockets Guides

Websockets in System Design

3 in-depth guides covering how websockets 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 DoorDash, Uber, Amazon.

Dec 5, 2025•22 min

How to Design DoorDash - Complete System Design Guide

Master DoorDash system design for your next big tech interview. Covers the three-sided marketplace architecture, order state machine, dasher dispatch with geoha...

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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 Websockets

Websockets 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

Real Time Kafka Distributed Systems Cassandra Redis Chat

Companies That Test Websockets

Amazon Apple Discord DoorDash Google Grubhub Instacart Lyft Meta Microsoft