Vercel 全面支援 stale-if-error 快取控制指令，提升網站容錯與可用性
Original: Stale-if-error cache-control directive now supported for all responses
On February 13, 2026, Vercel released an update announcing that its Edge network now fully supports the `stale-if-error` directive in HTTP…
Vercel 推出全新更新，現在所有 HTTP 回應皆支援 stale-if-error 快取控制指令。當來源伺服器發生 5xx 錯誤或網路連線失敗時，Vercel Edge 網路將自動向使用者呈現先前快取的過期內容。這項功能可顯著提升 Web 應用的容錯能力與可用性，確保在後端服務不穩定時，使用者仍能看到基本網頁內容。
On February 13, 2026, Vercel released an update announcing that its Edge network now fully supports the `stale-if-error` directive in HTTP `Cache-Control` headers. This update applies to all types of HTTP responses, providing developers with more powerful cache control capabilities and website resilience.
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