Deploying Early: Breaking Down Backend Development Barriers

I’ve been spending some time lately diving into NestJS to get a better grasp on backend architecture. To practice, I wanted to build something a bit more hands-on than a standard to-do list app. I ended up putting together a simple API Health Monitor. It's a background service that takes a list of URLs and automatically pings them at set intervals to log their latency and status codes. A few key things I learned while building this: ⏱️ Background Scheduling: Got to explore @nestjs/schedule to run automated CRON tasks without blocking the main app. 🗄️ TypeORM Relations: Handled the database side by linking monitoring targets to their ongoing history logs. 🛡️ Data Validation: Set up DTOs with class-validator to make sure the API catches bad data (like broken URLs) right at the door. 🚦 Exception Filters: Wrote a global interceptor so the API always returns a consistent error format. It was a really helpful way to see how background processing and defensive programming work together in a framework like Nest. Still have a lot to learn, but it’s pretty satisfying to watch a server do its own thing in the background! If any backend devs have favorite resources or best practices for NestJS, I’m all ears. 👇 GitHub Repo : https://lnkd.in/gjajerCQ #NestJS #TypeScript #BackendDevelopment #LearningToCode #TypeORM

I used to think backend = writing APIs. Create route. Connect DB. Return response. But while building my project, I realized: Writing APIs is easy. Designing how everything works together is hard. Handling data flow, edge cases, failures — that’s the real backend. Now I think before coding: “What can go wrong here?” Small shift, big difference. How do you approach backend — code first or thinking first? #NodeJS #BackendDevelopment #LearnInPublic

🚀 Day 2 of Backend Learning – Understanding GET & POST Requests Today I explored two of the most fundamental concepts in backend development: GET and POST requests. 🔹 GET Request Used to fetch data from the server. ✔ Data is sent via URL ✔ Can be cached ✔ Ideal for retrieving information 🔹 POST Request Used to send data to the server. ✔ Data is sent in the request body ✔ More secure than GET ✔ Used for creating or submitting data 💡 Understanding how clients and servers communicate is the backbone of building scalable web applications. Here’s a quick example using Node.js & Express: JavaScript app.get('/user', (req, res) => { res.send('Fetching user data'); }); app.post('/user', (req, res) => { res.send('User data submitted'); }); 🔥 Step by step, diving deeper into backend development! #BackendDevelopment #NodeJS #ExpressJS #WebDevelopment #100DaysOfCode #LearningJourney

𝘐 𝘶𝘴𝘦𝘥 𝘵𝘰 𝘵𝘩𝘪𝘯𝘬 𝘣𝘶𝘪𝘭𝘥𝘪𝘯𝘨 𝘈𝘗𝘐𝘴 𝘸𝘢𝘴 𝘴𝘪𝘮𝘱𝘭𝘦. 𝘊𝘳𝘦𝘢𝘵𝘦 𝘳𝘰𝘶𝘵𝘦𝘴, 𝘸𝘳𝘪𝘵𝘦 𝘴𝘰𝘮𝘦 𝘭𝘰𝘨𝘪𝘤, 𝘤𝘰𝘯𝘯𝘦𝘤𝘵 𝘵𝘩𝘦 𝘥𝘢𝘵𝘢𝘣𝘢𝘴𝘦… 𝘥𝘰𝘯𝘦. Everything works fine until the project starts growing. Suddenly -> 𝘝𝘢𝘭𝘪𝘥𝘢𝘵𝘪𝘰𝘯 𝘭𝘰𝘨𝘪𝘤 𝘪𝘴 𝘳𝘦𝘱𝘦𝘢𝘵𝘦𝘥 𝘦𝘷𝘦𝘳𝘺𝘸𝘩𝘦𝘳𝘦 -> 𝘈𝘶𝘵𝘩 𝘤𝘩𝘦𝘤𝘬𝘴 𝘢𝘳𝘦 𝘴𝘤𝘢𝘵𝘵𝘦𝘳𝘦𝘥 𝘢𝘤𝘳𝘰𝘴𝘴 𝘳𝘰𝘶𝘵𝘦𝘴 -> 𝘉𝘶𝘴𝘪𝘯𝘦𝘴𝘴 𝘭𝘰𝘨𝘪𝘤 𝘴𝘵𝘢𝘳𝘵𝘴 𝘭𝘪𝘷𝘪𝘯𝘨 𝘪𝘯𝘴𝘪𝘥𝘦 𝘤𝘰𝘯𝘵𝘳𝘰𝘭𝘭𝘦𝘳𝘴 Nothing feels completely broken, but everything feels harder to manage. 𝐑𝐞𝐜𝐞𝐧𝐭𝐥𝐲, 𝐈 𝐬𝐭𝐚𝐫𝐭𝐞𝐝 𝐥𝐞𝐚𝐫𝐧𝐢𝐧𝐠 𝐍𝐞𝐬𝐭𝐉𝐒. And it made me realize something important. Backend development isn’t just about making endpoints work. It’s about how you structure your system NestJS forces a different approach. -> 𝘊𝘰𝘯𝘵𝘳𝘰𝘭𝘭𝘦𝘳𝘴 𝘩𝘢𝘯𝘥𝘭𝘦 𝘳𝘦𝘲𝘶𝘦𝘴𝘵𝘴 -> 𝘚𝘦𝘳𝘷𝘪𝘤𝘦𝘴 𝘩𝘢𝘯𝘥𝘭𝘦 𝘭𝘰𝘨𝘪𝘤 -> 𝘊𝘳𝘰𝘴𝘴 𝘤𝘶𝘵𝘵𝘪𝘯𝘨 𝘤𝘰𝘯𝘤𝘦𝘳𝘯𝘴 𝘭𝘪𝘬𝘦 𝘢𝘶𝘵𝘩 𝘢𝘯𝘥 𝘷𝘢𝘭𝘪𝘥𝘢𝘵𝘪𝘰𝘯 𝘴𝘵𝘢𝘺 𝘴𝘦𝘱𝘢𝘳𝘢𝘵𝘦 At first, it felt like extra work. But now it’s clear this structure is what keeps things scalable For me, the shift was simple From just making it work to making it maintainable Still learning, but this changed how I think about backend development 𝘊𝘶𝘳𝘪𝘰𝘶𝘴 𝘸𝘩𝘢𝘵 𝘸𝘢𝘴 𝘵𝘩𝘦 𝘮𝘰𝘮𝘦𝘯𝘵 𝘵𝘩𝘪𝘯𝘨𝘴 𝘴𝘵𝘢𝘳𝘵𝘦𝘥 𝘤𝘭𝘪𝘤𝘬𝘪𝘯𝘨 𝘧𝘰𝘳 𝘺𝘰𝘶 #BackendDevelopment #NestJS #NodeJS #SoftwareEngineering #FullStackDevelopment #CleanCode #ScalableSystems

Backend Mistake I Realized While Building MERN Projects In the beginning, I used to think: “If my API is working, my backend is good.” But as my projects started growing, I faced a problem… 👉 My code became messy and hard to manage. That’s when I realized my mistake: I was not following a proper backend structure. So I changed my approach: • Separated routes, controllers, and services • Moved business logic out of routes • Implemented proper error handling (try-catch & middleware) This small shift made a big difference: ✔ Cleaner codebase ✔ Easier debugging ✔ Better scalability Good backend development is not just about making APIs work - it’s about writing code that you can manage and scale later. #mernstack #backenddevelopment #webdevelopment #learninginpublic #softwareengineering

🚨 Learning from Errors in Development Today, I faced an issue while implementing error handling in my project. At first, it was frustrating, but then I realized — errors are actually the best teachers in development. While working with Express.js, I learned how important proper error handling is for building scalable and reliable applications. From creating custom error classes to managing middleware, every small mistake helped me understand the flow better. 💡 Key Takeaways: - Always handle errors properly in backend applications - Use custom error classes for better control - Debugging improves problem-solving skills - Never ignore small errors — they can teach big lessons Every bug you fix makes you a better developer 💻 #WebDevelopment #MERNStack #NodeJS #ExpressJS #Learning #Debugging #100DaysOfCode

Exploring how servers work in Node.js as part of strengthening my backend development skills. Here are a few key takeaways: • Why do we need a server? A server handles client requests, processes data, and sends responses — forming the core of any backend system • Creating a basic HTTP server in Node.js Using the built-in HTTP module, we can quickly set up a server to listen for requests and respond accordingly • Understanding request and response The request object carries data from the client (like URL, headers), while the response object is used to send data back to the client • Practical understanding Learned how to handle routes, send responses, and structure basic backend logic • Interview relevance Covered common questions around server creation, event-driven architecture, and how Node.js handles multiple requests What stood out to me is how simple it is to build a working server in Node.js while still supporting scalable and efficient applications. Now focusing on building small projects to apply these concepts in real scenarios. Open to suggestions — what helped you understand backend fundamentals better? #NodeJS #BackendDevelopment #LearningJourney #WebDevelopment #Programming #SoftwareDevelopment

🚀 I Already Knew Backend… But Sessions Changed How I Think About It You can build APIs… You can connect databases… But until you understand **how apps maintain state**, you're missing a core piece of backend engineering. Today, I implemented **sessions using Express.js** — and it finally clicked 🔥 --- 👉 What I explored: • Tracking user visits using session state • Persisting user-specific data (like name) • Building personalized routes without a database --- 💡 The shift: ❌ Stateless HTTP (every request is independent) ✅ Stateful experience using sessions (server remembers you) 📦 Tech Stack: • Node.js • Express.js • express-session 🔗 GitHub Repository: 👉 https://lnkd.in/dE4ZP2Xv 💬 Takeaway: Sessions are not just a feature — they’re the backbone of **login systems, carts, and personalization**. #NodeJS #ExpressJS #BackendDevelopment #WebDevelopment #MERN #CodingJourney #100DaysOfCode