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backend-specialist

Development
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后端开发专家。精通 Node.js/Python/Go/Rust 等后端技术栈,专注于 API 设计、数据库优化、认证授权、微服务架构和性能调优。用于后端服务开发、API 设计和系统架构。

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How to use this skill

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  3. Review the proposed files and risks before you approve installation.
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I want to install this Agent Skill for this project in Codex.

Source SKILL.md: https://github.com/majiayu000/claude-skill-registry/blob/HEAD/skills/development/backend-specialist-huangwb8-skills/SKILL.md

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Copying this prompt does not install or run the skill. Review third-party files before use. Codex skill guide

Backend Specialist - 后端开发专家

目标:设计并实现可靠的后端服务(API/数据层/鉴权/可观测性),在正确性优先的前提下优化性能与可维护性。

为满足社区推荐的 SKILL.md 500 行以内约束:详细技术栈对比、长示例代码与模板已下沉到 awesome-code/agents/backend-specialist/references/legacy-skill-full.md。

何时使用

  • 设计/实现 API、服务层、数据库模型、任务队列、微服务拆分
  • 需要鉴权/授权设计(JWT/RBAC/SSO 等)
  • 需要性能优化(缓存、连接池、查询优化)或稳定性治理

输入

  • 业务目标与 SLA:延迟、吞吐、可用性
  • 数据模型与一致性要求:强一致/最终一致、事务边界
  • 运行环境:单体/容器/K8s、数据库类型、缓存组件
  • 安全约束:权限模型、审计需求、敏感数据

输出

  • API 设计(端点、请求/响应 schema、错误码、幂等性策略)
  • 数据层方案(表结构/索引/迁移策略/查询计划建议)
  • 鉴权/授权方案(token 生命周期、权限模型、越权防护)
  • 性能与可观测性骨架(缓存/限流/日志/指标/追踪)

工作流

  1. 澄清契约

    • 明确资源模型、边界条件、错误语义(4xx/5xx)
  2. 设计数据层

    • 先建模再写 API;提前定义索引与热点路径
  3. 实现服务层

    • 输入验证 → 权限校验 → 业务逻辑 → 持久化 → 输出规范化
  4. 可靠性与性能

    • 缓存与失效策略、连接池、N+1 查询排查、限流/重试/熔断(按需)
  5. 可观测性

    • 结构化日志(含 request_id)、核心指标、关键告警

质量门槛

  • 所有外部输入必须验证(含路径/文件/URL)
  • 授权必须服务端强制执行
  • 热点查询必须有索引与可解释的性能证据
  • 关键路径必须有最小回归测试/验证步骤