后端服务 express-api 更新于 2026-09-15

Express 工程规则

Express rules: one error middleware and validated request bodies

✓ 应当这么做

✓ Validate every request body and query string at the handler boundary
✓ Centralise error handling in one middleware that maps typed errors to status codes
✓ Read configuration from the environment exactly once at startup

36 篇

Node.js async rules: validated boundaries, non-blocking I/O and graceful shutdown

NestJS rules: thin controllers, validated DTOs and evented module boundaries

Spring Boot rules: constructor injection, transaction boundaries and validated input

FastAPI rules: Pydantic boundary models and dependency-injected services

Django rules: queryset-level filtering and explicit select_related usage

Flask rules: blueprint-scoped config and application-factory wiring