COD-TRAKR Update 🚀

Today's focus was mostly on optimization and cleanup.

🚀 Switched from Dashboard-Level Caching → Platform-Level Caching

Previously I was caching the entire dashboard response.

Now each platform (LeetCode, Codeforces, CodeChef, GFG) has its own cache layer.

Benefits:

• Better cache reuse

• Cleaner invalidation

• Faster dashboard loads

• Less redundant API calls

• Easier to scale

🔐 Found an Authentication Issue

While reviewing the OTP signup flow, I noticed OTP verification attempts were unlimited during the 5-minute validity window.

Current protections:

• OTP rate limiting

• Redis atomic counters

• OTP expiration

• Password & OTP hashing

Also fixed a bug where failed email delivery could leave temporary signup data in Redis. Added rollback logic to clean everything up automatically.

Next step: limit OTP verification attempts to prevent brute-force attacks.

⚛️ Frontend Migration Complete

The frontend is now fully migrated to React.

The codebase is much cleaner:

• Reusable components

• Simpler routing

• Easier maintenance

• Better structure for future features

🔮 Coming Next

• 📚 Top 100 DSA Questions Tracker

• 🏆 Contest Informer (LeetCode, Codeforces, CodeChef, AtCoder)

❓ Need Help With GFG Integration

This is currently the biggest blocker in COD-TRAKR.

I've successfully integrated:
✅ LeetCode
✅ Codeforces
✅ CodeChef

But GFG profile data remains difficult to fetch reliably.

I've tried:

• Network inspection

• Scraping

• Cheerio

• Playwright

• Puppeteer

• Various headers and approaches

Still no stable solution.

If anyone knows how platforms like Codolio fetch GFG stats, I'd love to hear your approach.

#buildinpublic #webdevelopment #reactjs #nodejs #redis #mongodb #opensource