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Backend High-Level Design (HLD) — Study Guide

A curated, structured catalog of backend system design questions for study and practice. Use it to plan study sessions, track coverage, and rehearse with a repeatable approach.

  • Backend HLD

    Collaborative Document Editor System Design

    Comprehensive backend architecture for real-time collaborative document editing with conflict resolution and synchronization mechanisms.

  • Backend HLD

    Live Comment System Architecture Design

    Comprehensive backend high-level design for a scalable real-time comment system with pub/sub, caching, and conflict resolution mechanisms.

  • Backend HLD

    Video Calling System Architecture Design

    Comprehensive backend high-level design for scalable video calling platforms with real-time communication and media processing capabilities.

  • Backend HLD

    Video Streaming Platform Architecture Design

    Comprehensive backend high-level design for a Netflix-like video streaming service with content delivery, user management, and real-time analytics.

  • Backend HLD

    Video Sharing Platform Backend Architecture Design

    Comprehensive high-level design for a scalable video sharing platform with content delivery, user management, and real-time features.

  • Backend HLD

    Live Streaming Platform Backend Architecture

    Comprehensive high-level design for a scalable live streaming platform handling real-time video ingestion, processing, and delivery to millions of concurrent users.

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