Documentation: middleware

Cross Cutting Summary

Themes

  • Most middleware operate early in the lifecycle before route handlers.
  • Common risk: lack of proper async error handling and logging.
  • Security concerns include IP logging, token management, and bypass risks.
  • Scalability limited by in-memory caches and direct DB writes without batching.
  • Recommendations focus on adding async error handling, queuing, rate limiting, and using distributed caches.
  • Coupling generally low to moderate; dynamic loading and external services introduce risks.
  • Architectural improvements include abstraction of logging, centralized security controls, and fallback strategies for external Dependencies.

Modules