Practical notes on architecture, trade-offs, and code you can run in production.
If onboarding a new customer requires deploying a new application or duplicating an entire database, your SaaS architecture probably isn't ready to scale. Learn how to implement multi-tenancy in NestJS in a clean and maintainable way.
If every new feature forces you to modify five different services, you probably have a coupling problem. Learn how Event-Driven Architecture helps decouple modules and scale NestJS applications.
When your UserService handles POST and GET, optimizations on one side break the other. Learn commands, queries, and handlers with @nestjs/cqrs.
Controllers that know too much, entities full of ORM decorators, and tests that need a database. A practical guide to ports and adapters in NestJS.