10 Angular Best Practices to Keep Your Codebase Scalable Long-Term

A developer with experience across multiple Angular projects has identified 10 recurring habits that determine whether a codebase stays maintainable over time. Key recommendations include separating UI logic into components while moving business logic into services, adopting standalone components, and applying OnPush change detection for better performance. The guide also advocates for feature-based folder structures over type-based ones, composing RxJS streams with operators like switchMap and forkJoin instead of nesting subscriptions, and enforcing strict TypeScript typing. The author has published these practices in an open-source GitHub repository and plans to expand the series to cover Angular Signals, performance optimization, and enterprise-scale architecture.