Why Restarting Dev Server Fixes Everything

When a user opens a website, the process is simpler than most people think: Browser requests a URL DNS resolves the domain Server processes the request Response is sent back Browser renders the page Understanding this flow is fundamental for every developer. The better you understand the basics, the better you build and debug systems. What part of this process do you want to learn deeper? #webdevelopment #softwareengineering #frontend #backend #internet #coding #developer #programming #techcareer

Real talk: Your app slows down over time because logs keep growing. No cleanup. No rotation. Fix: - Rotate logs - Set size limits - Delete old logs Logs should help you, not slow you down. #Programming #DevOps #Backend #DevTips

The biggest React 19 feature isn’t a new hook. it’s the React Compiler, now stable and shipping with zero configuration! The compiler automatically memoizes your components. You no longer need to sprinkle useMemo, useCallback, and React.memo everywhere: #react #developer #dev #programming #react19 #compiler #programming #tips #frontend

𝐓𝐡𝐢𝐧𝐠𝐬 𝐈 𝐮𝐬𝐞𝐝 𝐛𝐞𝐟𝐨𝐫𝐞 𝐈 𝐮𝐧𝐝𝐞𝐫𝐬𝐭𝐨𝐨𝐝: 𝐂𝐎𝐑𝐒 A teammate asked me this recently: “You have a frontend on localhost:3000 and a backend on localhost:8000 Why is the request getting blocked?” I’ve hit this so many times 😅 Earlier, I’d just Google it, add a quick fix, and move on. But the actual reason behind it is CORS: Even on the same laptop, different ports are treated as different sources. So the browser blocks the request by default to keep things secure (𝐒𝐚𝐦𝐞-𝐎𝐫𝐢𝐠𝐢𝐧 𝐏𝐨𝐥𝐢𝐜𝐲). CORS (𝐂𝐫𝐨𝐬𝐬-𝐎𝐫𝐢𝐠𝐢𝐧 𝐑𝐞𝐬𝐨𝐮𝐫𝐜𝐞 𝐒𝐡𝐚𝐫𝐢𝐧𝐠) is basically the backend saying: “This request from this source is allowed.” Sharing a quick visual that made it click for me 👇 #Backend #WebDevelopment #CORS #Developers #LearningInPublic #SoftwareEngineering #Programming #TechConcepts

Real talk: Your feature works… but breaks after refresh. State is only in memory. Fix: - Persist important state (DB/localStorage) - Re-fetch on load - Don’t rely on temporary state If it matters, it should survive refresh. #Programming #WebDev #Frontend #DevTips

Most people choose frontend vs backend based on hype — not reality. The difference that actually matters long term is often ignored. https://lnkd.in/gH9F32gc #WebDevelopment #Frontend #Backend #TechCareers #Programming #DeveloperJourney

The journey to becoming a Full-Stack Developer can feel overwhelming with so many technologies out there. 🚀 This roadmap breaks down the entire process into 15 clear steps—from mastering the basics of Frontend to understanding Web Architecture and Security. 💻 Whether you are a beginner or looking to bridge gaps in your knowledge, this guide is a great reference point. Key takeaway: Focus on one step at a time rather than trying to learn everything at once. 🎯 Which stage of this roadmap are you currently on? Let’s discuss in the comments! 👇 #FullStackDeveloper #WebDevelopment #CodingRoadmap #SoftwareEngineering #TechCareer #Programming #LearningPath

3 Commands. 1 Goal: Save Production. 🛠️ When the site goes dark, don't panic. Follow the data: 🔹 Verify Service: curl -f http://localhost:5000 🔹 Find the Root Cause: grep ERROR app.log 🔹 Check the Port: ss -tulnp | grep 5000 The difference between a Junior and a Senior isn't knowing how to code—it's knowing how to debug when everything is on fire. #CloudEngineering #DevOps #SRE #Programming #TechTips

Think you know the exact order Node prints async callbacks? Four console.log calls are queued using sync, nextTick, Promise.then and setImmediate. No other code runs. In production the wrong assumption can reorder logs, hide timing bugs, and mislead performance metrics. Debug sessions become noisy, and latency regressions slip through. Interviewers love to trap you with this nuance. Comment A, B, C, or D with your reasoning and defend your pick. #NodeJS #Backend #Programming #CodingInterview

A lot of people are shipping faster than ever, but when something breaks, most reach for AI instead of looking at what the browser is actually telling them. I wrote 5 DevTools features that most developers miss and never really used: → $0 and $_ console shortcuts → Network request blocking → Local Overrides → Rendering panel → Memory profiling Full breakdown is on my blog 👇 https://lnkd.in/g3w2GnDv #frontend #webdevelopment #devtools #javascript #programming