Design Typeahead System Design Interview

1. Problem Statement

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.

graph LR
    A["Design Typeahead"]
    A --> F1["Data Structures Trie / Ternary Search Tree"]
    A --> F2["Latency Optimization Caching @ Client/CDN/Server"]
    A --> F3["Ranking Offline learning to rank"]
    A --> F4["Data Retrieval Sampling logs"]

3. Key Focus Areas

• 1
  Data Structures (Trie / Ternary Search Tree)
• 2
  Latency Optimization (Caching @ Client/CDN/Server)
• 3
  Ranking (Offline learning to rank)
• 4
  Data Retrieval (Sampling logs)