testland/stale-while-revalidate-reference
Pure-reference catalog of RFC 5861's stale-while-revalidate + stale-if-error Cache-Control extensions. Defines stale-while-revalidate=N (caches MAY serve a stale response while asynchronously revalidating, up to N seconds after expiry) and stale-if-error=N (caches MAY serve stale on 5xx upstream errors). Distinguishes from RFC 9111's must-revalidate (forbids serving stale) and from manual cache-aside refresh (synchronous). Covers the interaction with the freshness lifetime (max-age) and the cache-stampede-mitigation properties. Use when designing the cache-refresh boundary or auditing existing Cache-Control headers.
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This plugin was archived by the owner on Oct 11, 2026
Reason: Tile archived: Retired from testland/qa (merged into another skill or removed).
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