Feature Based Clean Architecture. Part 3: The Architectural Risk of Cycles in NestJS: ROI of Decisions on a Five-Year Ho

An architectural doctrine for NestJS projects: a breakdown of typical codebase degradation scenarios and the structural constraints that keep them from emerging as the feature set grows. Now let's see what this "decomposition into services" actually costs on a horizon a little longer than one sprint. Our product already has a FollowsService — it lives tidily in its own module, drops "followerId → targetUserId" relations into its table, and knows nothing it shouldn't. In parallel — UsersModule ,