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Shipped: E-Commerce Price Tracker watches Amazon & Daraz, emails you when the price drops
Ever kept refreshing a product page waiting for a sale? I automated that.
Paste any Amazon / Daraz product URL + your target price, and it scrapes the live price, stores the history, re-checks every few hours, and emails you the moment it hits your target.
What it does- 🔎 Live price scraping (works behind bot protection)
- 📉 Full price history per product
- ⏰ Auto re-check every few hours (Celery Beat)
- 📧 Email alert when target price is hit
- 🌐 REST API + Web UI + CLI
Tech stack- Backend: Python, FastAPI, Pydantic
- Background jobs: Celery + Celery Beat + Redis
- DB: PostgreSQL, SQLAlchemy, Alembic migrations
- Scraping: Selenium, undetected-chromedriver, BeautifulSoup, cloudscraper
- Alerts: SMTP + Jinja2 templates
Hardest parts- Anti-bot protection — plain
requests gets blocked instantly. Ended up with undetected-chromedriver in headless mode, cloudscraper as a lighter fallback.
- HTML keeps changing — Daraz especially. Built multi-selector fallback logic so one broken selector doesn't kill the whole scrape.
- Parallel checks — moved from a loop to a Celery task queue so hundreds of products get checked concurrently.
- Proper schema — versioned Alembic migrations, not a throwaway script.
Same architecture works for competitor price monitoring, stock/availability alerts, or any "watch a site and notify me" automation.
🔗 Code: https://github.com/danish614
🌐 Portfolio: https://lnkd.in/dXE58DgUAdd a comment
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