Nest
Browse every technical article, tutorial, and guide organized by nest
Mastering NestJS: A Comprehensive Guide from Fundamentals to Core Architecture
Unlock the full potential of server-side applications with NestJS. This extensive guide takes you from the basics of Modules and DTOs to intermediate architecture concepts including Execution Contexts, Custom Decorators, and Circular Dependency resolution.
Building Bulletproof APIs in NestJS: Validation, Serialization, and Versioning
Garbage in, garbage out? Not on our watch. Deep dive into protecting your NestJS endpoints using Pipes, class-validator, and class-transformer. This guide covers complex scenarios like conditional validation, custom decorators, and ensuring your API evolves safely with URI versioning.
NestJS Persistence: Mastering Database Integrations, ORMs, and Advanced Patterns
Data is the lifeblood of your application. Whether you choose SQL or NoSQL, this guide dissects the integration of major ecosystem players (TypeORM, Prisma, MikroORM, Mongoose) into NestJS. We go beyond simple connections to explore the Repository pattern, ACID transactions, and enterprise-grade read-replica configurations.
Securing NestJS: A Deep Dive into Authentication, Authorization, and RBAC/ABAC
Security is not a feature; it's a foundation. This guide transcends basic login tutorials to explore the complete identity lifecycle. We cover the integration of Passport.js strategies, implementing secure OAuth2 flows, defining complex permission systems with CASL, and hardening your API with refresh token rotation and MFA.
Designing Modern APIs in NestJS: From REST and OpenAPI to GraphQL Federation and gRPC
Modern backends require versatility. Whether you need a standard RESTful interface documented with OpenAPI, a high-performance GraphQL graph utilizing Federation, or low-latency gRPC microservices, NestJS provides the abstractions. This guide compares, contrasts, and implements every major communication protocol available in the framework.
Production-Ready NestJS: Advanced Configuration, Caching Strategies, and Async Queues
Scalability relies on three pillars: flexible configuration, efficient caching, and asynchronous processing. In this deep dive, we architect a production-grade environment using the ConfigModule, implement high-performance caching with Redis, and offload heavy computations to background workers using BullMQ and Cron.
Building Scalable Microservices with NestJS: Architecture, Transporters, and Patterns
Monoliths have their place, but scale often demands distribution. This comprehensive guide dissects the NestJS Microservices module, providing deep dives into every major transport layer—from the low-latency of TCP to the event streaming power of Kafka. We explore the trade-offs between Request-Response and Event-based patterns and how to implement Hybrid Applications that bridge the gap.
Production Operations in NestJS: Comprehensive Testing, Observability, and Security Hardening
Code that functions is common; code that lasts is rare. This guide bridges the gap between development and operations (DevSecOps). We explore advanced testing patterns, build a complete observability stack using OpenTelemetry and Prometheus, and lock down your application using industry-standard security practices for encryption, sanitization, and headers.
Managing Media in NestJS: Efficient File Uploads, Streaming, and Cloud Storage (S3/GCS)
Storing files on the server disk is a recipe for disaster in containerized environments. This guide transitions you from basic Multer setups to scalable, stream-based architectures. We cover security validation, on-the-fly image optimization, and direct integrations with object storage providers like AWS S3 and GCS.