Node.js CORS configuration error

Most Node.js APIs work perfectly in development. Then they go to production and break in ways nobody expected. The difference between an API that holds up and one that doesn't usually comes down to five things: - Centralised error handling (not scattered try/catch blocks) - Request validation before anything hits the database - Rate limiting to prevent abuse and traffic spikes - Async error forwarding so Express actually catches them - Structured logging so you can debug what went wrong None of these are complex to implement. All of them are skipped when developers are moving fast. We just published a practical guide to building Node.js REST APIs that hold up in production - covering each of these patterns with working code. Read it here: https://lnkd.in/dB-4nYej #NodeJS #BackendDevelopment #RESTAPI #ExpressJS #WebDevelopment

Day 85/100 #100DaysOfCode 🧑🏻💻 Focused on professional error handling in backend systems. 📍 Implemented standardized error response structure (JSON format) 📍 Learned proper use of HTTP status codes 📍 Improved error messaging for better debugging 📍 Created custom error classes for structured handling 📍 Followed best practices for reusable error logic Better errors = better systems. #100DaysOfCode #Backend #NodeJS #ErrorHandling #MERN

Day 86/100 #100DaysOfCode 📍 Implemented global error handling using wrapper functions 📍 Learned Promise-based error handling (resolve/catch pattern) 📍 Reduced repetitive try-catch using centralized handling logic 📍 Followed production-grade backend practices #100DaysOfCode #Backend #NodeJS #ErrorHandling #MERN

🚀 Built something small but actually useful yesterday. Published an npm package called localmockdb. Honestly, I built it because I was tired of waiting for APIs just to test frontend work. So this lets you spin up a mock REST API using localStorage and just keep building. Install it → use it → done. "npm install localmockdb" You can: ✅ create, update, delete data like a real API ✅ test full CRUD flows ✅ keep data even after refresh ✅ build UI without backend dependency To make it practical, I also built a small mobile-first Todo tool using it. Not just a demo screen, but something you can actually play with. Demo: https://lnkd.in/dPY6Q_h8 Package: https://lnkd.in/dgnCxt_u If you're learning React / building frontend-first / making quick MVPs — this might save you some time. Let me know what you think 👀 #localmockdb #npm #npmpackage #frontenddeveloper #frontenddevelopment #react #nextjs

Skill Boosters — Notes #9: Node.js V8 Engine & Microservices 🔗 Read full article: https://lnkd.in/gV87EbEC Ever wondered why Node.js is so fast? 👇 V8 Engine - Converts JavaScript → Machine Code - Executes it super fast Microservices - Break app into small services - Each service works independently Why this matters? ✔ V8 → Speed ✔ Microservices → Scalability Real Meaning Fast execution + Scalable system = Powerful backend architecture One Line Takeaway: Node.js + V8 = Speed | Microservices = Scale What do you prefer: Monolith or Microservices? #NodeJS #Microservices #BackendDevelopment #JavaScript #SystemDesign

💡 Node.js Async/Await — Clean & Efficient Code const data = await fetchData(); console.log(data); Why it matters: • Cleaner, readable async code 🧠 • Better error handling ⚡ • Smooth, non-blocking performance 🚀 👉 Async/Await = faster, smarter backend development. #NodeJS #AsyncAwait #CleanCode #WebDevelopment

Hot take: Laravel's Eloquent relationships are incredibly powerful, but I see too many devs loading entire collections when they only need specific fields. A simple -select

Another productive backend session today 🚀 We explored some key concepts that power how systems and applications work, including: - Basics of Operating Systems and how they manage resources - Understanding how HTTP works (requests & responses) - Using the Path module to handle file and directory paths - Parsing data to make applications more dynamic It’s interesting seeing how the operating system plays a big role behind the scenes while Node.js interacts with it to run processes efficiently. Everything is gradually coming together 🔥 Excited to keep learning and building! #BackendDevelopment #NodeJS #OperatingSystems #LearningJourney #WebDevelopment

A client once asked my team to switch its entire stack mid-project. Nothing was wrong, it was because the software we were integrating with used a different language and he assumed same language meant smoother integration. Made sense to him. He doesn't care about Node.js and didn't care when we chose it either. He just wants the two systems to talk to each other without giving him headaches. That conversation made me realize the whole React vs Vue, Postgres vs MongoDB debate is mostly developers talking to themselves. The client is somewhere else entirely thinking does it work, does it solve my problem, can I afford it. So what do you actually consider when picking a stack for a client project?

Hitesh Choudhary Just watched "Custom API Response and Error Handling" from Chai aur Code 🔥 This is one of the most important backend concepts that many developers overlook in the beginning. Hitesh sir explained: • How to create a consistent and clean API response structure • Building a custom error handling class • Using asyncHandler (higher-order function) for cleaner async error handling • Why proper error handling is crucial for scalable backend applications It really helps in making your Express.js APIs more professional, maintainable, and user-friendly. If you're learning backend development with Node.js & Express, this lecture is highly recommended. Watch here: https://lnkd.in/ggSu-YX4 How do you handle errors in your backend projects? Do you use custom error classes or try-catch everywhere? Share your approach 👇 #NodeJS #ExpressJS #BackendDevelopment #API #MERN #JavaScript