How To Dev

Introduction NestJS is a progressive NodeJS framework designed for building efficient, reliable, and scalable server-side applications. Built on top of TypeScript (but also supporting pure JavaScript), NestJS combines elements of Object-Oriented Programming (OOP), Functional Programming (FP), and Functional Reactive Programming (FRP). The outstanding advantages of NestJS include: Modular architecture: Helps organize code scientifically, easy to maintain and expand for large projects. Powerful TypeScript support: Fully leverage static typing to minimize errors during development. Flexibility: Allows easy integration with other libraries (like Express or Fastify) and supports a wide variety of communication protocols (REST, GraphQL, WebSockets, Microservices). Rich ecosystem: Provides ready-to-use tools for processing common tasks like Validation, Caching, Database mapping (TypeORM/Prisma), and Authentication. Dependency Injection: A powerful mechanism that helps manage...

Introduction When discussing designing effective APIs for production-ready, scalable and maintainable systems, we do not just talk about adhering to RESTful standards, but must approach it from a System and Developer Experience (DX) perspective. To design APIs effectively, the core principles usually applied are KISS (Keep It Simple, Stupid) and Consistency . As systems grow larger, consistency in URL design, error codes and payload handling will be the lifesaver for both Frontend and Backend teams. Below is the blueprint for effective API design divided by core pillars: Architectural Style & Protocol Selection Pick the right tool for the job REST (JSON over HTTP/1.1 or HTTP/2) : Still the default choice for public APIs and B2B integrations thanks to its popularity, ease of debugging and broad ecosystem. gRPC (Protocol Buffers over HTTP/2) : Mandatory for Inter-service communication (Internal Microservices) with benefits including low latency, robust streaming suppo...