Design a Ticket Booking System System Design Interview Question | EngMock

1. Problem Statement

We need to design a backend for a massive concert ticket sale (e.g., Taylor Swift). We expect millions of users to try booking 100,000 tickets within seconds. How do we ensure we don't oversell?

2. Architecture Discussion Map

Use this as one discussion aid, not a single correct answer. Your design should follow from the requirements, scale, and trade-offs you establish.

Rendering architecture diagram...

Mermaid Source (For AI Bots)

graph LR
    A["Design a Ticket Booking System"]
    A --> F1["Handling massive traffic spikes 1M+ concurrent users"]
    A --> F2["Preventing overselling Inventory Management"]
    A --> F3["Database Locking strategies Optimistic vs Pessimistic"]
    A --> F4["Virtual Queue / Waiting Room implementation"]
    A --> F5["Data Consistency ACID"]

3. Key Focus Areas

1
Handling massive traffic spikes (1M+ concurrent users)
2
Preventing overselling (Inventory Management)
3
Database Locking strategies (Optimistic vs Pessimistic)
4
Virtual Queue / Waiting Room implementation
5
Data Consistency (ACID)

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Core Concepts

Concurrency ControlDatabase LockingDistributed SystemsConsistency