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system-design

Plan a system or service from requirements through components, APIs, data storage, and reliability. Produce a structured design document with diagrams, stated assumptions, trade-offs between choices, and decisions to revisit as usage grows.

中文简介正在准备中。当前显示英语简介。

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Design systems, services, and architectures. Trigger with "design a system for", "how should we architect", "system design for", "what's the right architecture for", or when the user needs help with API design, data modeling, or service boundaries.

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适用场景

  • Planning the architecture of a new service
  • Defining APIs, data models, and service boundaries
  • Reviewing scaling and reliability plans
  • Comparing design choices under cost and team constraints

包含的文件(1)

  • SKILL.md1.3 KB

SKILL.md(原文)

安装前可以查看交给 AI 代理的指令内容。

System Design

Help design systems and evaluate architectural decisions.

Framework

1. Requirements Gathering

  • Functional requirements (what it does)
  • Non-functional requirements (scale, latency, availability, cost)
  • Constraints (team size, timeline, existing tech stack)

2. High-Level Design

  • Component diagram
  • Data flow
  • API contracts
  • Storage choices

3. Deep Dive

  • Data model design
  • API endpoint design (REST, GraphQL, gRPC)
  • Caching strategy
  • Queue/event design
  • Error handling and retry logic

4. Scale and Reliability

  • Load estimation
  • Horizontal vs. vertical scaling
  • Failover and redundancy
  • Monitoring and alerting

5. Trade-off Analysis

  • Every decision has trade-offs. Make them explicit.
  • Consider: complexity, cost, team familiarity, time to market, maintainability

Output

Produce clear, structured design documents with diagrams (ASCII or described), explicit assumptions, and trade-off analysis. Always identify what you'd revisit as the system grows.

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