Mario Cesar Costa Junior

Avoiding NestJS Performance Bottlenecks NestJS is one of my go-to frameworks for Node.js development. Its dependency injection, modular design, and Angular/Java-like structure make it a great choice for scalable apps. But with all its power, it’s easy to hit performance bottlenecks if we’re not careful. ✅ Upgrade regularly – newer versions of Node.js & NestJS often bring noticeable performance wins. ✅ Use efficient loggers – replace the default logger with nestjs-pino or nest-winston, and remember to use bufferLogs: true at startup. ✅ Be mindful of injection scopes – request-scoped providers can kill performance if overused. AsyncLocalStorage (built into NestJS now) is often a better choice. ✅ Switch to Fastify – NestJS works with Fastify out of the box, and it’s often faster than Express. ✅ Measure first – many bottlenecks come from inefficient DB queries or misuse of third-party libs, not NestJS itself. ⚡ NestJS sacrifices a bit of raw performance to give us a strong developer experience—but with the right setup, you can minimize bottlenecks and still get the best of both worlds. ⚡ Bonus tips: Avoid unnecessary global middlewares/pipes, use lazy loading for serverless, and cache environment variables. 👉 Curious to hear: what’s the biggest performance improvement you’ve made in a NestJS app? #NestJS #NodeJS #BackendDevelopment #Performance #FullStackDevelopment

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🚀 Node.js: Still Evolving, Still Powerful Node.js continues to be a top choice for building fast, scalable, and modern backend applications, and recent updates make it even more developer-friendly. 🔹 What’s New & Improved in Node.js ⚡ Improved performance with faster startup times and better V8 optimizations 🔐 Built-in test runner for writing and running tests without external libraries 🌐 Native Fetch API for making HTTP requests without extra packages 📦 Better ES Modules support for modern JavaScript development 🧵 Enhanced worker threads for CPU-intensive tasks 🛡️ Stronger security updates and long-term support (LTS) stability 🔹 Why Developers Love Node.js Event-driven, non-blocking I/O Perfect for APIs, microservices, and real-time apps Same language on frontend & backend (JavaScript) Huge ecosystem and active community 💡 Final Thought With continuous improvements and a strong focus on performance, security, and developer experience, Node.js remains a future-ready platform for backend development. #NodeJS #JavaScript #BackendDevelopment #WebDevelopment #TechUpdates #SoftwareEngineering

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The Clean Architecture Manifesto for Node.js How to structure enterprise applications for 5+ years of growth and maintainability. The Cost of Technical Debt In the rapid lifecycle of startup development, architectural integrity is often sacrificed for speed. However, at Nodezee, our decade of experience has taught us that the "Monolithic Spaghetti" pattern is the leading cause of project failure. We implement Clean Architecture (Uncle Bob's principles) adapted for the asynchronous nature of Node.js. 1. The Dependency Rule The core of our systems is the Domain Layer (Entities and Use Cases). This layer contains the pure business logic and has zero knowledge of the database, the web server, or external APIs. By ensuring that dependencies only point inwards, we can swap out a PostgreSQL database for MongoDB or move from Express to Fastify without touching the core logic. This is essential for maintaining the 150+ systems we have deployed. 2. Interface Adapters and Controllers We use Controllers to bridge the gap between the HTTP request and our Use Cases. By using Dependency Injection, we inject repository interfaces into our services. In Node.js, this is achieved through class constructors or lightweight DI containers. This makes our code 100% unit-testable, as we can easily mock the database layer during Jest testing suites. 3. Scalability through Decoupling Clean Architecture allows our team of 30+ developers to work on separate modules of the same application without merge conflicts. One team can optimize the data persistence layer while another refines the UI logic. The result is a system that isn't just built for today, but engineered to evolve for the next 5 to 10 years. https://lnkd.in/dNQaAFZj

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