Specialized Systems

In this module, we move beyond generic web services and tackle systems that require domain-specific data structures and algorithms.

What You Will Learn

  • Geospatial Indexing: How Uber and Yelp handle location data using QuadTrees, Geohashing, and Google S2.
  • Remote Code Execution: How LeetCode securely runs untrusted user code using Sandboxing and gVisor.
  • Financial Transactions: How Payment Systems ensure zero data loss using Double-Entry Ledgers and Idempotency.
  • Scheduling & Booking: How Google Calendar detects conflicts using Interval Trees, and how Airbnb manages high-concurrency inventory with Distributed Locking.

Chapters

Chapter Title Key Concepts
01 Design Uber (Geospatial Indexing) QuadTrees, Geohashing, S2, Hilbert Curves.
02 Design LeetCode (RCE) Sandboxing, gVisor, Firecracker, Seccomp.
03 Design a Payment System Idempotency, Ledgers, ACID, Double-Entry.
04 Design Google Calendar Interval Trees, RRULE, Conflict Detection.
05 Trading Order System RFQ, Token Bucket, Redis Atomicity.
06 Airbnb / Hotel Reservation System [NEW] Inventory Locking, Double-Booking Prevention, CDC.

These systems often come up in senior-level interviews because they test your ability to adapt standard patterns to specific constraints.

Module Chapters

Chapter 07

Review & Cheat Sheet

Review & Cheat Sheet [!IMPORTANT] In this lesson, you will review: Key Concepts Flashcards: Test your knowledge of QuadTrees, S2, gVisor, Idempotency, and Interval Trees....

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