Common Pitfalls in Backend Development: Assumptions Over Syntax

Dev Log: Solving The “To-Do-List Guilt” (Day 4 & 5) I just hit a major milestone on FocusFlow. Instead of building a standard CRUD app, I spent the last two days engineering a system that prioritizes a user's mentality. The Build: I implemented a persistence layer using LocalStorage and custome React hooks to manage a “Daily Momentum” engine.The app now handles data hydration, real-time filtering, and slide over “win archive” for completed tasks. The challenges faced:: i wanted tasks to expire after 24 hours to keep the UI fresh and clean, but I didn't want user to feel like their work disappeared in to void, so I refactored the task logic to use Conditional Filtering instead of hard deletion. Another challenge faced was: initially, deleting a task to clean UI also broke the “Daily Mementun” percentage.if the task is gone, how does that bar know it was completed? And here is what I did as <<AGBA CODER 🤭>> I wrote a useEffect cleanup function that compares the createdAt timestamp with Date.now().if >24hrs passed, then the task is truly purged.{you feel am right 💪} I must say, it's been a lesson in balancing data persistence with clean UX, and the most significant takeaway from today working is that Data and the UI state do not have to be the same thing shout-out to The Engineer Network for this PUSH 🙌🙌🙌 GitHub:: https://lnkd.in/dn_4S7EV Demo Link:: https://lnkd.in/dk6j3kJY #BuildingInPublic #EngShipIt #FrontendDev #LearningNodeJS #OpenForJobs

Most performance issues are not frontend or backend problems. They’re contract problems. I’ve seen systems where: Frontend blamed the API for being slow Backend blamed the UI for overfetching And the real issue was… undefined data contracts When endpoints are unclear: Payloads grow without control Breaking changes slip into production Frontend logic starts compensating for backend behavior High-performing systems do this instead: Explicit request/response contracts Versioned APIs Validation at the boundary, not deep inside the app Shared understanding between teams not assumptions The fastest teams aren’t the ones writing more code. They’re the ones reducing ambiguity. #FullStackEngineer #SystemDesign #APIDesign #BackendDevelopment #FrontendArchitecture #ScalableSystems #SoftwareEngineering #CleanCode #WebDevelopment

💻 People praise the screen. Developers carry the storm behind it. Users see a clean User Interface ✨ A smooth button. A beautiful dashboard. A flawless experience. But they never see the chaos behind the curtain. The sleepless nights. The broken APIs. The bugs that appear only in production. The code that works perfectly… until the client clicks that one button. 😅 Behind every beautiful interface, there’s a developer silently fighting: ⚡ complex logic 🐛 hidden bugs 🔥 crashing servers ⏳ impossible deadlines ☕ endless coffee-fueled debugging sessions People celebrate what’s visible. But real builders know— the real magic happens in the invisible layers. The backend doesn’t get applause. The database doesn’t get likes. The developer rarely gets credit. Yet without them, the “beautiful UI” is just an empty shell. To every developer building products the world depends on: You are not just writing code. You are building experiences, businesses, and futures. Respect to the minds behind the screens 👏 Tag a developer who deserves recognition today 👇 #DeveloperLife #SoftwareEngineer #BackendDeveloper #TechLife #LinkedInCreators

What clients really care about (hint: not code) One thing developers learn late 👇 Clients don’t actually care about your code. They care about what the code does for their business. They don’t want: “React vs Vue debates” “Microservices vs monolith arguments” “Clean architecture discussions” They want: • More customers • Faster processes • Automated workflows • More revenue The real skill isn’t just coding. It’s translating business problems into software solutions. The best developers think like product owners, not just programmers. When you understand the business goal, the technology becomes easier to choose. Build solutions. Not just software.

I thought I had a simple bug. Turns out… it was a production-level system design mistake. ⚠️ Today, I built a PG management feature where: • Tenants get assigned beds   • Rooms show occupancy   • Beds track availability  Everything looked correct… until it wasn’t. The UI showed: Room = FULL ❌   Occupied Beds = 0 ❌   Available Beds = wrong ❌  At first, I thought it was a UI issue. The real problem? 👉 My system had multiple sources of truth • Tenant status → ACTIVE   • Bed status → still VACANT   • API → not returning related data  Everything was “correct” individually…  but wrong together. This wasn’t a bug. This was a state synchronization problem. Here’s what I fixed: ✅ Made beds the source of truth for occupancy   ✅ Synced lifecycle (create, update, move-out)   ✅ Fixed API to return relational data properly   ✅ Ensured consistency between backend and UI  The biggest lesson? Don’t just write logic. Design how your state flows across the system. Because: 👉 A system is only as correct as its most inconsistent state This is the kind of problem you don’t see in tutorials… …but you will see in real products. And solving it changes how you think as a developer. Have you ever faced a bug where everything was correct…   But still wrong? 🤔 #reactjs #nextjs #webdevelopment #softwareengineering #fullstack #javascript #systemdesign #developers #learning #buildinpublic

I built a Real-Time Performance Monitor to turn messy logs into actionable data. It’s not just about tracking numbers—it's about identifying exactly where an application slows down before the user even feels it. The Technical Deep Dive: 1. Startup Analysis: Visualizing bottlenecks across Binary Load, Config Parse, and Model Connect to shave off milliseconds. 2.Memory Health: Real-time tracking of Heap vs. Total Memory to catch leaks during long sessions. 3.API & Tooling Stats: Monitoring execution frequency and latency trends (like a 1163ms avg API response) to optimize backend efficiency. 4.Regression Alerts: A built-in system to flag critical performance drops (e.g., 35% startup spikes) instantly. The Stack: Frontend: React.js / TypeScript Visualization: Recharts / D3.js State Management: Context API UI/UX: Tailwind CSS / Framer Motion Building this taught me that performance isn't just a metric—it's a feature. #WebDev #Performance #ReactJS #TypeScript #DataViz #SoftwareEngineering

𝗪𝗵𝘆 𝗜 𝗰𝗵𝗼𝘀𝗲 𝗕𝗮𝗰𝗸𝗲𝗻𝗱 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁? (𝗠𝘆 𝗣𝗲𝗿𝘀𝗼𝗻𝗮𝗹 𝗝𝗼𝘂𝗿𝗻𝗲𝘆) 🛣️ (𝗖𝘂𝗿𝗶𝗼𝘂𝘀 𝗙𝗿𝗶𝗲𝗻𝗱): Brother, you're so good at logic and architecture. But why did you choose the "Dark Side"? I mean, why Backend? Frontend is so much more colorful! (𝗠𝗲): 𝘚𝘮𝘪𝘭𝘪𝘯𝘨 That’s a great question. When I started my journey, I was actually fascinated by UI designs. But soon, I realized I was more interested in how things "work" rather than just how they "look". (𝗖𝘂𝗿𝗶𝗼𝘂𝘀 𝗙𝗿𝗶𝗲𝗻𝗱): Really? What was that "Aha!" moment for you? (𝗠𝗲): I remember building my first simple login system. Seeing the data travel from a form, getting validated by the server, and then stored securely in a database... it felt like I was building the brain of a living creature. 🧠 (𝗖𝘂𝗿𝗶𝗼𝘂𝘀 𝗙𝗿𝗶𝗲𝗻𝗱): So, it was the power of logic that pulled you in? (𝗠𝗲): Exactly! I loved the challenge of: 🔹 𝗦𝗼𝗹𝘃𝗶𝗻𝗴 𝗰𝗼𝗺𝗽𝗹𝗲𝘅 𝗽𝘂𝘇𝘇𝗹𝗲𝘀: Like optimizing a database query that takes too long. 🔹 𝗧𝗵𝗲 𝗦𝗲𝗰𝘂𝗿𝗶𝘁𝘆 𝗚𝗮𝗺𝗲: Ensuring that no one can break into the system and steal user data. 🔹 𝗦𝗰𝗮𝗹𝗮𝗯𝗶𝗹𝗶𝘁𝘆: Building something that doesn't just work for 10 people, but can handle 10,000 requests without crashing. (𝗖𝘂𝗿𝗶𝗼𝘂𝘀 𝗙𝗿𝗶𝗲𝗻𝗱): Don't you miss the colors and animations of the Frontend? (𝗠𝗲): Sometimes! But to me, there is a different kind of beauty in a clean API response, a well-structured database schema, and a server that runs 24/7 without a glitch. That invisible power is what keeps me going every day as a Developer. 💡 𝗟𝗲𝘁 𝗺𝗲 𝗸𝗻𝗼𝘄 𝗶𝗻 𝘁𝗵𝗲 𝗰𝗼𝗺𝗺𝗲𝗻𝘁𝘀: What was your "Aha!" moment in coding? Was it a beautiful UI or a powerful backend logic? 👇 #BackendDevelopment #MyCodingJourney #SoftwareEngineering #CareerGrowth #DeveloperLife #LogicOverDesign #TechStory #FullStack #ProgrammingLife

Stop putting all your components in a folder called "Components" 🗑️ I see this too often: src/ ├── components/ │ ├── Button.jsx │ ├── Modal.jsx │ ├── UserProfile.jsx │ ├── Dashboard.jsx │ └── ... 47 more files This doesn't scale. Here's the feature-based architecture that actually works for enterprise apps: src/ ├── features/ │ ├── auth/ │ │ ├── components/ │ │ ├── hooks/ │ │ └── api/ │ ├── dashboard/ │ │ ├── components/ │ │ └── utils/ │ └── profile/ ├── shared/ │ ├── ui/ (Button, Input, Modal) │ └── lib/ (api client, utils) └── app/ └── routes/ Why this works: Each feature is self-contained Deleting a feature means deleting ONE folder Onboarding new devs is faster No more import spaghetti (../../../../components/...) Save this for your next project setup. 👨💻 #ReactJS #CodeArchitecture #WebDev #SoftwareEngineering #CleanCode Devendra Dhote Sheryians Coding School

🎓 Certified & Built: Claude Code in Action — But Here's the Real Talk Completed Anthropic's Claude Code in Action course, and as always, I had to go beyond the certificate and build something real. The stack: ⚡ Next.js — with MultiZone Shell for micro-frontend orchestration 🦀 Rust — backend service (learning it comparing with Go) 🐳 Container App on Cloud Run — fully containerised deployment 🎲 Check out the demo in progress — a board game app: https://stayandplays.com/ But here's what I actually want to talk about 👇 Claude didn't build this. I did. The MultiZone Shell architecture in Next.js wasn't something I just prompted my way into — it came from genuinely learning Micro Frontend (MFE) Architecture with React, understanding how independent apps inter-connect, share boundaries, and remain independently deployable. That foundation is what made the implementation possible. And this brings me to something I feel strongly about: "Claude can help you write code fast. It cannot save you from a broken architecture." If the system design is weak — if you haven't thought through how services communicate, how security is enforced, how PII/data flows across boundaries — no amount of AI-assisted vibe coding will save the product. The cracks will show at scale, in production, or worse, in a security incident. Before you vibe code, invest in: 🏗️ System Design fundamentals 🔐 Security & data boundary thinking 🧩 Software architecture principles (MFE, microservices, clean architecture) 📐 Engineering discipline — not just shipping speed And remember — "With great power comes great responsibility." Claude and AI tools like it are genuinely powerful. They can accelerate development, unlock creativity, and compress weeks of work into hours. But that power demands responsibility — responsibility to understand what you're building, how it holds together, and who it affects. Blindly trusting AI to vibe code your way to production is not engineering. It's gambling. Learn the craft first. Then let AI accelerate it. ✅ 🔗 Certificate: https://lnkd.in/grmrZRyf #SoftwareEngineering #SystemDesign #MicroFrontends #NextJS #Rust #CloudRun #ClaudeCode #Anthropic #VibeCode #Architecture #BoardGame

I often see developers managing state for spinners inside every single component. They manually toggle an isLoading variable before and after every API call repeating that logic 50 times across a project. This is a recipe for technical debt. It leads to inconsistent UI and a nightmare of "if/else" logic. My preferred approach? A Decoupled Reactive Flow. As you can see in the diagram, I move the responsibility away from the UI: =>The Button (The Trigger): The component just fires an HTTP call. It doesn't know (or care) about the spinner. =>The HTTP Interceptor (The Brain): This acts as a middleman. It automatically catches every request and tells the service to toggle the state. =>The Spinner Service (Source of Truth): Whether you use a BehaviorSubject or a state management lib, the service holds the single "Loading" status for the entire app. Why this wins for your project: => Zero Boilerplate: No more isLoading = true in every function. => Total Consistency: The spinner always behaves the same way, app-wide. => Scalability: When you add 10 more API calls, you don't have to write a single line of loader logic. Architecture isn't just about making things work; it's about making them maintainable. How are you handling global UI states in your current stack? #AngularDeveloper #ReactDeveloper #NextJSDeveloper #Angular #WebDevelopment #CleanCode #RxJS #FrontendArchitecture #StateManagement