devfaruq

Problem Solving & Debugging

Development Case Studies

A closer look at the real challenges I have faced while building full-stack and frontend projects, and how I approached solving them through debugging, restructuring, testing, and continuous learning.

Real Problems I Solved

These case studies focus on practical development issues such as authentication, deployment, file uploads, state management, and backend integration.

Showing 6 Case Studies
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Core System

DevFaruq Clothing E-Commerce

Authentication & Route Protection

The Challenge

Building a secure authentication flow for both normal users and admin users without exposing protected pages or backend routes.

The Solution

I used JWT authentication, protected routes, and role-based checks to separate user access from admin access. I also made sure tokens were stored and sent properly for authenticated requests.

What I Learned

Authentication is not only about login. It also involves protecting pages, validating users, and controlling access correctly.

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Solved

Portfolio / Frontend Deployment

Deployment & Refresh 404 Fix

The Challenge

After deploying the frontend, navigating to pages worked normally, but refreshing pages like collection or project routes caused 404 errors.

The Solution

I investigated the difference between client-side navigation and direct browser refresh in production. I corrected the routing setup and deployment behavior so routes could resolve properly after refresh.

What I Learned

Something that works locally may still fail in production if deployment routing is not configured properly.

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Backend Fix

Backend Integration

Email Service Configuration

The Challenge

The email system failed because the API key was missing or not properly loaded in the environment, which prevented actions like verification and email delivery.

The Solution

I corrected the environment variable setup, checked how the email service was initialized, and made sure the backend could access the API key both locally and after deployment.

What I Learned

Third-party services depend heavily on proper environment configuration and careful deployment setup.

🖼️
Implementation

Admin Dashboard / Product Management

Image Upload & Cloud Storage

The Challenge

Handling product image uploads across the admin dashboard and backend was difficult because files needed to be processed, uploaded, and stored correctly.

The Solution

I integrated file upload middleware and cloud storage so product images could be uploaded from the admin side and stored safely for display across the application.

What I Learned

File upload features require coordination between frontend forms, backend processing, and cloud storage configuration.

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UI Logic

DevFaruq Clothing E-Commerce

Cart & Checkout State Flow

The Challenge

Managing cart data, checkout inputs, and user interactions across multiple components became difficult as the application grew.

The Solution

I improved the way state was handled so updates stayed consistent across components, making the shopping flow smoother and reducing UI bugs.

What I Learned

Good state management improves both user experience and maintainability in frontend applications.

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Ongoing Growth

Full-Stack Architecture

Working Across Client, Admin, and Backend

The Challenge

Building separate client, admin, and backend systems introduced complexity in project structure, API communication, and feature coordination.

The Solution

I organized the project into clear sections and focused on separating responsibilities, which made it easier to manage features and debug data flow across the full stack.

What I Learned

Real-world full-stack work requires thinking beyond single pages and understanding how different parts of a system work together.

My Process

How I Approach a Problem

My debugging process usually moves from identifying the issue, to isolating the root cause, implementing the fix, and learning from the result so the next problem becomes easier to solve.

Step 1 · The Problem

A blocker appears during development

A feature breaks, deployment fails, or a part of the application stops behaving the way I expect.

Step 2 · Investigation

I isolate the actual cause

I review logs, inspect the code flow, compare local and deployed behavior, and narrow the issue down instead of guessing.

Step 3 · Implementation

I apply and test the fix

I update the code, improve the structure, and verify that the solution works properly across the relevant parts of the project.

Step 4 · Learning

I document what the issue taught me

Each solved problem improves my understanding of architecture, deployment, debugging, or frontend and backend integration.

Let’s Build Something Great

Want to see more of my work?

You can explore my projects, learn more about my background, or reach out if you want to collaborate on something meaningful.

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