Dev Tools · 1h ago
Silent data drift: when scrapers succeed but lie
A scraper ran successfully for 11 weeks, but a site A/B test moved the price element, causing 40% of products to have null prices. The pipeline wrote nulls without error because exit 0 doesn't mean correct data. The article advocates validating output schema rather than hardening parsers.
Meridian48 take
The piece rightly highlights a common blind spot in data pipelines, but the proposed canary check is a basic fix that many teams already use; the real challenge is monitoring drift at scale.
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Your scraper isn't broken. The site changed, and it didn't tell you. →
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