Architecture Deep Dive on Your Past Project 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["Architecture Deep Dive on Your Past Project"]
    A --> F1["Original requirements and constraints"]
    A --> F2["Architecture and ownership boundaries"]
    A --> F3["Failure modes and production evidence"]
    A --> F4["Trade-offs and rejected alternatives"]
    A --> F5["Incremental redesign plan"]

3. Key Focus Areas

• 1
  Original requirements and constraints
• 2
  Architecture and ownership boundaries
• 3
  Failure modes and production evidence
• 4
  Trade-offs and rejected alternatives
• 5
  Incremental redesign plan

4. What Strong Candidates Should Demonstrate

• ✓Explain a real architecture from requirements and constraints rather than hindsight.
• ✓Use evidence to defend trade-offs, bottlenecks, and operational decisions.
• ✓Propose a realistic redesign without rewriting everything.