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: How Google Calendar efficiently detects conflicts using Interval Trees.

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

Module Chapters