Trace Blog
Product updates, carrier coverage notes, and practical guides for developers building shipping workflows.
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Build a React shipment timeline with your own tracking provider. Try the local visual builder, split-order examples and Next.js starter with durable signed webhooks.
Read articleTrack YunExpress, 4PX, Cainiao, and ePacket orders in a dropshipping store: carrier auto-detection, supplier delays, and delivery notifications.
Read articleAdd order tracking to Shopify and WooCommerce with a small API integration instead of a full post-purchase platform: get the tracking number, call a tracking API, and render a status page.
Read articleA practical framework for choosing a package tracking API: tracking-only vs. full post-purchase platforms, per-lookup pricing, carrier coverage, webhooks, and data shape.
Read articleAn engineering decision guide for official carrier APIs, aggregators, scraping fallbacks, normalized events, resilience, compliance, and the true cost of multi-carrier tracking.
Read articleControl tracking API spend with state-aware polling, caching, webhooks, deduplication, active-shipment windows, and usage metrics that preserve customer experience.
Read articleA practical data model for shipments, tracking events, webhook deliveries, provider requests, deduplication, retention, and fast customer-facing queries.
Read articleTurn delivery exceptions into clear customer actions with severity rules, automated notifications, carrier evidence, support workflows, and measurable recovery outcomes.
Read articleSecure shipment webhooks with HMAC verification, raw request bodies, timestamp tolerance, constant-time comparison, idempotency, and reliable retry handling.
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