9 tips for a painless microservices migration

  • Draw domain lines to define and document your business entities early on. Be mindful of how you cross the boundaries between these entities.
  • Document your URL route domains and ensure everyone follows the one convention.
  • Be explicit about routes and methods. Avoid wildcard routes and wildcard verbs or HTTP methods.
  • Assign URL endpoint ownership for clean formation of teams in the future.
  • Monitor URL usage by instrumenting the endpoints - at least graph the request rate, if not the error rate and performance of every HTTP endpoint you expose.
  • Kill dead code - delete it, not just comment on it. Have source code control for history, if needed.
  • Document the environment variables a service, class or module uses.

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