PriceRadar — Price Comparison & Tracking Tool

PriceRadar is a side project that automatically collects product prices from various online shops, stores the history and notifies via email on significant price changes. Users can add products by URL and set price targets.

01

Challenge

Every shop structures its product pages differently. Price extraction must be robust against layout changes, and the system needs to regularly check hundreds of products without overloading shops.

02

Solution

Python scraper with configurable extraction rules per shop. Go-based scheduler for parallel crawling with rate limiting. Next.js frontend with price history charts. PostgreSQL for time-series data.

03

Result

Working side project with web UI. Currently tracks products from several German online shops. Source code public on GitHub.

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