Architecture Design

When to Use

• Starting a new product or major feature that needs system design
• Choosing between monolith, modular monolith, microservices, or event-driven patterns
• Selecting a database (SQL vs NoSQL vs specialized) for a new project
• Analyzing dependencies for circular references, coupling issues, or outdated packages
• Creating architecture diagrams (Mermaid, PlantUML, ASCII) for documentation or review
• Writing Architecture Decision Records (ADRs) for technical choices
• Evaluating scalability bottlenecks or planning capacity

Context Required

From startup-context: product description, tech stack, current state (prototype/beta/scaling), team size, expected scale (users, requests/sec, data volume). If missing, ask:

• What does this system need to do? (core use cases)
• What scale are you targeting? (users, requests/sec, data size)
• What is your team size and backend experience level?
• Are there hard constraints? (compliance, latency, budget, existing infra)