How Requestly Simplifies Browser-Level Debugging

Free & Open-Source Alternative to Postman 🚀 Simplify Debugging, Mocking & Network Control with Requestly As developers, we’ve all faced that pain point — 👉 when an API isn’t ready yet, 👉 when staging doesn’t match production, 👉 or when you just need to tweak a response to test a front-end edge case. That’s where Requestly shines. 🌟 It’s one of those tools that feels like magic once you try it — allowing you to intercept, modify, and mock network requests in real time, right from your browser or desktop. No code changes, no proxy pain, just pure control. Here’s what makes it awesome 👇 🔄 Redirect APIs from production → localhost instantly 🧰 Mock API responses without touching the backend 🧠 Inject scripts or headers for quick experiments 🪄 Debug live traffic for web and mobile apps 👥 Share and sync rules with your team effortlessly Honestly, it’s like having Charles Proxy, Postman, and browser DevTools in one lightweight package — built for real-world devs and testers. If you’re into web, mobile, or API development, give Requestly a try. It’s one of those rare tools that saves hours every week and just works. 💡 Kudos to the Requestly team for building something that makes developer life so much smoother! #DeveloperTools #Debugging #API #Frontend #Requestly #PostmanAlternative #WebDevelopment #QA #Productivity

🚀 How Automated Tests Saved My Node.js Deploy Last week, I refactored a small authentication function, or so I thought. Five minutes later, half the API started returning 401 😅 Luckily, I had already adopted automated testing in my workflow. One quick npm test and the failing cases popped right up, before going to production. That run literally saved me hours of debugging and a sleepless night. 🧩 My testing stack: . Jest – main testing framework . Supertest – HTTP endpoint testing . Sinon – mocks and spies for isolated logic . GitHub Actions – runs tests automatically on every PR 💡 Tip: You don’t need 100% coverage, you need confidence where it matters most. ⚙️ Quick example import request from 'supertest'; import app from '../src/app.js'; describe('User API', () => {  it('should create a new user', async () => {   const res = await request(app)    .post('/users')    .send({ name: 'Jhony', email: 'jhony@test.com' });   expect(res.statusCode).toBe(201);   expect(res.body).toHaveProperty('id');  }); }); Since I added automated tests, every PR comes with fewer surprises and more confidence. Now my CI runs, tests pass ✅, and deployments are way less stressful. #NodeJS #Testing #Jest #Automation #CleanCode #Backend #JavaScript #SoftwareEngineering #DevLife #MakersGonnaMake

You’ve built the frontend. Backend works too. Here are 15 common mistakes full-stack devs make, and how to avoid them. 1. Frontend Pitfalls – Ignoring responsive design – Rendering too many DOM elements at once – Not testing across different browsers Fix: – Use Flexbox/Grid – Virtualize long lists – Test with tools like BrowserStack 2. Backend Blunders – Poorly structured database models – Weak or no authentication – No error handling or logging Fix: – Normalize your schema – Use hashed passwords (bcrypt) – Add logs and return clear error messages 3. API & Integration Issues – Returning sensitive data – No API rate limiting – Hardcoded API keys in code Fix: – Use DTOs or serializers – Add rate limiting with libraries like express-rate-limit – Store secrets in environment variables 4. DevOps & Deployment Mistakes – Hardcoded URLs or credentials – No logging in production – Unoptimized JavaScript and CSS bundles Fix: – Use .env for configs – Implement logging tools like Sentry – Optimize build with tools like Webpack or Vite 5. Team & Workflow Mistakes – No documentation – Skipping user testing – Ignoring code reviews Fix: – Document APIs with Swagger – Collect feedback with MVPs – Collaborate using Git best practices Being a full-stack developer means balancing multiple layers of a product. Mistakes happen, but awareness is key. Start small, test often, secure everything, and prioritize communication. #TechSkills #codingtips #fullstackdeveloper #backenddevelopers #frontenddeveloper

🚀 Tired of React Native Performance Blindspots? Meet Your New Code Quality Engineer Unused imports, deprecated packages, and bundle bloat are silently costing you performance, maintenance time, and development velocity. After analyzing hundreds of projects, I built React Native Optimizer - and it's ready for early adoption. 📊 What it delivers: • Automated unused code detection • Deprecated package alerts • Bundle size analysis • Interactive HTML reports • Zero-config setup This is where I need your expertise. As we enter the testing phase, your technical feedback will directly shape the production-ready version. But here’s the truth — I need your help to make it bulletproof. 💪 This is your open invitation to become an early tester and help shape the future of this tool. Try the analysis in seconds: npx rnopt analyze Then contribute to its development: 📸 Share your analysis results in comments 💡 Suggest critical features missing 🐛 Report any edge cases encountered This isn't just another package - it's our collective opportunity to raise the bar for React Native tooling. Your input today builds better tools for our entire community tomorrow. Ready to optimize together? Package: https://lnkd.in/eckrshpH #ReactNative #JavaScript #TypeScript #MobileDevelopment #WebDevelopment #DeveloperTools #CodeQuality #Performance #SoftwareEngineering #Programming #Tech #OpenSource #NodeJS #Developer #Coding #Programming #SoftwareDevelopment #AppDevelopment #Frontend #Backend #FullStack #DevOps #CI/CD #WebPerformance #MobileApps #TechCommunity #ProgrammingLanguages #SoftwareArchitecture #CleanCode #BestPractices #ProgrammingTips #DeveloperProductivity

💫 My current favourite tech stack for web development: -- > 🌐 Frontend: Next.js + TypeScript, Tailwind CSS, ShadCN UI Why: This delivers type-safe, high performance UIs at lightning speed. ShadCN gives me a head start with its wide variety of components. --> ⚙️ Backend & Database: Google Cloud (Firebase), Supabase Why: For rapid prototyping and projects needing real-time features. I've used them for almost everything from user dashboards to live data feeds. --> 🧪 Testing: TDD/Unit Testing: Vitest, Jest, Mocha, Chai BDD: Cucumber + Gherkin E2E: Cypress, Selenium WebDriver Why: Vitest ensures my units are solid, Cucumber aligns on behaviour, and Cypress/Selenium guarantees the final product works for the user. Plus these integrate well with my frontend. --> 🚀 CI/CD & DevOps: GitHub Actions, Jenkins, Docker Why: Automation is non-negotiable. CI/CD pipelines builds, tests, and deploys my code reliably, while Docker ensures consistency from my machine to production. --> 📊 Monitoring: Prometheus, Grafana Why: Shipping is only half the job. This stack gives me the visibility I need to understand how applications behave in the wild and proactively catch issues. --> 🚚 Deployment: Vercel Why: Quick, easy and simple. A huge benefit deploying this way for me is mostly due to the React/Next.js ecosystem. Everything is connected, monitored and served to you on a silver platter. What's in your stack? ____________________________________ Keep in touch: Email: imahdiahmed01@gmail.com Website: mahdiuahmed.com Medium: https://lnkd.in/eWQyjrA3 Github: github.com/mahdiuahmed #TechStack #WebDevelopment #SoftwareEngineering #Developer #NextJS

Know this before you DEPLOY 1️⃣𝗡𝗲𝘃𝗲𝗿 𝗶𝗴𝗻𝗼𝗿𝗲 𝘄𝗵𝗮𝘁 𝗿𝗲𝘁𝘂𝗿𝗻𝘀 𝗮 𝗣𝗿𝗼𝗺𝗶𝘀𝗲.   Async functions dont execute like sync ones, they schedule, not complete. 2️⃣𝗨𝘀𝗲 𝘗𝘳𝘰𝘮𝘪𝘴𝘦.𝘢𝘭𝘭() 𝘄𝗶𝘀𝗲𝗹𝘆. 𝘢𝘸𝘢𝘪𝘵 𝘗𝘳𝘰𝘮𝘪𝘴𝘦.𝘢𝘭𝘭(𝘶𝘴𝘦𝘳𝘴.𝘮𝘢𝘱((𝘶) => 𝘴𝘦𝘯𝘥𝘞𝘦𝘭𝘤𝘰𝘮𝘦𝘌𝘮𝘢𝘪𝘭(𝘶))); 𝘭𝘰𝘨𝘔𝘦𝘴𝘴𝘢𝘨𝘦("𝘈𝘭𝘭 𝘦𝘮𝘢𝘪𝘭𝘴 𝘴𝘦𝘯𝘵!");   You will ensure every task completes, or catch the failure early. 3️⃣𝗜𝗳 𝘀𝗼𝗺𝗲 𝗰𝗮𝗻 𝗳𝗮𝗶𝗹 𝘀𝗶𝗹𝗲𝗻𝘁𝗹𝘆, 𝘂𝘀𝗲 𝘗𝘳𝘰𝘮𝘪𝘴𝘦.𝘢𝘭𝘭𝘚𝘦𝘵𝘵𝘭𝘦𝘥() 𝘤𝘰𝘯𝘴𝘵 𝘳𝘦𝘴𝘶𝘭𝘵𝘴 = 𝘢𝘸𝘢𝘪𝘵 𝘗𝘳𝘰𝘮𝘪𝘴𝘦.𝘢𝘭𝘭𝘚𝘦𝘵𝘵𝘭𝘦𝘥(𝘶𝘴𝘦𝘳𝘴.𝘮𝘢𝘱(𝘴𝘦𝘯𝘥𝘞𝘦𝘭𝘤𝘰𝘮𝘦𝘌𝘮𝘢𝘪𝘭));   𝘳𝘦𝘴𝘶𝘭𝘵𝘴.𝘧𝘰𝘳𝘌𝘢𝘤𝘩((𝘳) => {    𝘪𝘧 (𝘳.𝘴𝘵𝘢𝘵𝘶𝘴 === "𝘳𝘦𝘫𝘦𝘤𝘵𝘦𝘥") 𝘤𝘰𝘯𝘴𝘰𝘭𝘦.𝘦𝘳𝘳𝘰𝘳(𝘳.𝘳𝘦𝘢𝘴𝘰𝘯);   }); 4️⃣𝗔𝗹𝘄𝗮𝘆𝘀 𝘄𝗿𝗮𝗽 𝗰𝗿𝗶𝘁𝗶𝗰𝗮𝗹 𝗮𝘀𝘆𝗻𝗰 𝗰𝗮𝗹𝗹𝘀 𝗶𝗻 𝗲𝗿𝗿𝗼𝗿 𝗯𝗼𝘂𝗻𝗱𝗮𝗿𝗶𝗲𝘀 𝗼𝗿 𝘁𝗿𝘆 𝗼𝗿 𝗰𝗮𝘁𝗰𝗵.   Uncaught promise rejections can kill servers quietly. 5️⃣In React or frontend apps, a missing await can trigger re renders or memory leaks when states update before data arrives. One missing 𝘢𝘸𝘢𝘪𝘵 can look harmless, but in production, it means broken workflows, lost users, and long days chasing invisible bugs. 𝗕𝗲𝗳𝗼𝗿𝗲 𝘆𝗼𝘂 𝗗𝗘𝗣𝗟𝗢𝗬: ✅ Add ESLint rules 𝘯𝘰-𝘧𝘭𝘰𝘢𝘵𝘪𝘯𝘨-𝘱𝘳𝘰𝘮𝘪𝘴𝘦𝘴 ✅ Use typed APIs that force you to handle Promises ✅ Wrap all async functions in predictable handlers ✅ And above all, never assume async = done. When you build at scale, tiny async mistakes become massive bottlenecks. That’s why companies that value reliability, code discipline, and developer empathy move faster, not just with speed, but with control. If your team struggles with async bugs, data inconsistencies, or untraceable behavior, that is exactly the kind of system I help teams debug, refactor, and scale with full chest. #Nodejs #JavaScript #Async #Promise #Nextjs #WebDevelopment #Backend #Frontend #Startup #CTO #CleanCode #Debugging #SoftwareEngineering

⚔️ Frontend vs Backend – Beyond the Code (Part 4) 💥 How Developers Handle Errors Differently Every developer’s journey has one universal villain — bugs 🐞 But have you noticed how Frontend and Backend devs deal with them in completely different ways? 👇 🎨 Frontend Devs: → Console.log everything. → Refresh 10 times. → Blame CSS. → Finally find the missing semicolon. 😅 🧠 Backend Devs: → Check logs. → Restart server. → Test API. → Realize the issue was in .env all along. 🤦♂️ When testing begins: Frontend says — “It’s working on my system!” Backend replies — “Then deploy your system!” QA quietly exits the chat 💀 🚀 Deployment day: Frontend hopes UI stays perfect. Backend hopes database stays alive. PM just hopes for no rollback. 😬 💡 Real Talk: Frontend adds color 🎨 Backend adds logic 🧠 But both add stress — equally 😅 💬 Tell me — Which team handles errors better in your experience? 👇 Drop your thoughts (and tag your favorite dev partner!) Follow Nitish Kumar For More Valuable content ☺️ #FrontendVsBackend #DeveloperHumor #CodingLife #FullStackDevelopment #WebDevCommunity #ProgrammingMemes #TechCulture #SoftwareEngineering #Developers #Debugging #LinkedInCreators

#Developer #Notes: Dependencies vs DevDependencies: An example that Just Saved 563 Packages from Production Here's what happens when you run pnpm install --production on a properly configured NestJS project: Result: -563 packages excluded from production Let that sink in. 563 packages that would have unnecessarily bloated the production build were kept out—simply by correctly categorizing dependencies. The Clear Distinction: Dependencies (RUNTIME) → What your app needs to EXECUTE passport (0.7.0) - Authentication at runtime bcrypt (6.0.0) - Password hashing in production @nestjs/core (11.1.8) - Core framework functionality rxjs (7.8.2) - Reactive programming in your app These go to production. Your app won't run without them. DevDependencies (BUILD TIME) → What you need to BUILD and TEST jest (29.7.0) - Unit testing framework typescript (5.9.3) - Compiles to JavaScript before deployment eslint (9.38.0) - Code linting during development @types/* - TypeScript type definitions These stay on your machine. Production never sees them. The Real Numbers: When I ran pnpm install --production: Excluded: 563 packages (devDependencies) Time saved: Milliseconds vs seconds on every deploy Space saved: Hundreds of megabytes Security surface reduced: 563 fewer packages to audit The Test Every Developer Should Run: pnpm install --production # or npm install --production If you see TypeScript, ESLint, Jest, or testing libraries still being installed, you have a problem. Common Mistakes I See: Putting typescript in dependencies (it compiles, doesn't run) Adding @types/* packages to dependencies (only for dev intellisense) Leaving testing libraries in dependencies (tests don't run in prod) Installing everything as a regular dependency "just to be safe" Being "safe" is actually making your production environment LESS safe. The difference between a 150MB and a 800MB container? Usually just this classification. Stop Bloating Your Production Bundle What's your production bundle size? Tag someone who needs to see this #NodeJS #DevOps #BestPractices #SoftwareEngineering #NestJS #Performance

“Writing Jest Test Cases That Build Confidence, Not Confusion” Still manually refreshing your browser after every code change — hoping nothing breaks? We’ve all been there. A tiny change in one file... and suddenly, three unrelated features stop working. Debugging turns into detective work. Hours wasted. Confidence lost. That’s when we realized — testing isn’t a chore; it’s an investment in peace of mind. And for JavaScript projects, Jest makes that investment effortless. ⚡ At our team, we standardized all frontend and Node.js testing using Jest — a simple, powerful, and zero-config framework. It transformed how we validate our code before it ever hits production. 🔹 Old Way — manual testing, console logs, late-night debugging. 🔹 New Way — automated test cases, instant feedback, fearless refactoring. ⚙️ Step 1 — Set Up Jest Install it with: npm install --save-dev jest Add this to your package.json: "scripts": { "test": "jest" } ⚙️ Step 2 — Write Your First Test Example: const sum = require('./sum'); test('adds 1 + 2 = 3', () => {   expect(sum(1, 2)).toBe(3); }); ⚙️ Step 3 — Scale It Up Use describe() blocks for grouping, beforeEach() for setup, and matchers like toBe, toEqual, or toThrow for richer assertions. Reduced bug escapes by 60% Immediate feedback during local dev Safer code reviews and refactors Predictable releases with fewer regressions Writing test cases isn’t about slowing down development — it’s about speeding up trust. 💡 If you’re still relying on “hope testing” (aka manual clicks + prayers), maybe it’s time to let Jest handle the heavy lifting. #Jest #JavaScript #Testing #SoftwareEngineering #CodeQuality #UnitTesting #Automation #FrontendDevelopment #ReactJS #DevBestPractices #TechLeadership #CleanCode