Bulk Downloading 1688 Product Images: A Lesson in Maxing Out Bandwidth
A recent incident highlighted the challenges of bulk downloading product images from 1688. The initial approach led to bandwidth saturation, causing disruptions in business operations. A redesigned downloader with rate limiting and retry mechanisms was implemented to prevent future issues.
- ▪The original script for downloading images launched 200 concurrent threads without rate limiting.
- ▪This caused outbound bandwidth to max out at 500Mbps, interrupting other business operations for 18 minutes.
- ▪The new downloader uses Guzzle's async capabilities, implementing concurrency control and a token bucket algorithm for bandwidth management.
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try { if(localStorage) { let currentUser = localStorage.getItem('current_user'); if (currentUser) { currentUser = JSON.parse(currentUser); if (currentUser.id === 3945843) { document.getElementById('article-show-container').classList.add('current-user-is-article-author'); } } } } catch (e) { console.error(e); } yanmoheluo Posted on May 27 Bulk Downloading 1688 Product Images: A Lesson in Maxing Out Bandwidth #ai #webdev ur purchasing system suddenly went down. Monitoring showed that outbound bandwidth was maxed out at 500Mbps, causing all external API requests to timeout. The culprit was a script for bulk downloading 1688 product images—it launched 200 concurrent download threads without any rate limiting, completely saturating our shared bandwidth.
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