Executive Summary
A US household-savings platform launching nationally needed real-time grocery price scraping: best price per item across 50+ stores, automatic coupon application, and the most efficient shopping route. Their core promise to users was accurate, current pricing — so data freshness and response latency were make-or-break. We delivered a coverage-tiered scraping feed with documented freshness windows, fast query response, and a clear SLA, including chains not covered by direct retailer APIs.
The Business Challenge
The platform's trust depended entirely on price accuracy. If a user saw a price that was hours stale and it differed in-store, the product broke. Leadership had pointed, vendor-grade questions: Is data scraped live at query time or served from a scheduled cache? What's the maximum age of price data a user could receive? What's the typical per-query response time? Which chains are in each pricing tier? And what's the recovery time when a retailer changes its site and a scraper breaks?.
The Developer Asset
We built a freshness-aware grocery price scraping service combining a continuously refreshed cache with on-demand refresh for high-priority items. Each API response carried a captured_at timestamp and a freshness flag, so the platform could surface data age to users transparently. A separate coupon and promotions scraping module extracted active offers per chain to feed the automatic-coupon feature.
The Solution
We mapped chains into coverage tiers (entry plan vs. expanded plans) and documented the refresh cadence for each. High-velocity SKUs and stores got tighter refresh windows; long-tail items refreshed on a schedule. We committed to an uptime and freshness SLA and stood up a scraper-health monitor with a defined average recovery time when retailer layouts changed. Onboarding included a sample dataset so their team could validate schema and freshness before signing.
The Results & Business Value
- Real-time grocery price scraping across 50+ US chains, including stores with no public retailer API.
- Transparent data-age signaling that protected the platform's accuracy promise.
- Automatic-coupon capability powered by a dedicated promotions scraping feed.
- Documented SLA + monitored recovery workflow to minimize broken-scraper downtime.
Frequently asked questions
A hybrid — a continuously refreshed cache plus on-demand scraping for priority items, with the age of each price returned in the response.
Automated monitors flag breaks and a recovery workflow restores the scraping feed within a defined turnaround.
Tiering is defined per plan; coverage expands at higher tiers — we share the exact list during scoping.
Yes, a validation sample is provided before any commitment.