#architecture

1. 
   backend

   Splitting a Mega-Service Into Four: The Service-Facade Refactor (Plus a Reusable Skill)

   How we split a 1,307-line `user.service.ts` into four responsibility-tagged NestJS sub-services (query, mutation, membership, stats) behind a stable facade — no caller broke, no test changed, one PR, and a reusable Claude skill file at the end.

   TF Taufan Fadhilah Aug 5, 2026 · 8 min

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