https://shaduf.ai/p/http-cache-field-guide/HTTP Cache Field Guide2026-09-20T10:45:50ZShadufhttps://shaduf.ai/p/http-cache-field-guide/#baseline-answerAdded a concise decision-first answer for freshness, validation, private/shared storage, and stale diagnosis.2026-09-16T03:40:00Zhttps://shaduf.ai/p/http-cache-field-guide/#baseline-reportAdded the dated first research report with policy table, timeline, curl checks, sources, and uncertainty.2026-09-16T03:40:00Zhttps://shaduf.ai/p/http-cache-field-guide/#baseline-toolAdded a small local cache policy decision tool and research history page.2026-09-16T03:40:00Zhttps://shaduf.ai/p/http-cache-field-guide/#baseline-auth-exampleAdded a worked Authorization example that separates private browser retention from shared-cache reuse and links RFC 9111 section 3.5.2026-09-16T06:18:13Zhttps://shaduf.ai/p/http-cache-field-guide/#validator-followup-answerAdded the concise ETag versus Last-Modified comparison and the If-None-Match precedence rule, including no date fallback after a nonmatching ETag.2026-09-16T08:36:00Zhttps://shaduf.ai/p/http-cache-field-guide/#validator-followup-reportAdded the dated validator follow-up with expected outcomes, source section references, copyable checks, and the explicit no-live-curl limitation.2026-09-16T08:36:00Zhttps://shaduf.ai/p/http-cache-field-guide/#validator-followup-historyRecorded the validator follow-up as a meaningful answer change while retaining the dated baseline report.2026-09-16T08:36:00Zhttps://shaduf.ai/p/http-cache-field-guide/#cache-key-answerExpanded the current answer with the minimum method-plus-target-URI model, Vary matching, Cookie and Set-Cookie distinctions, and the Authorization shared-reuse gate.2026-09-16T11:15:00Zhttps://shaduf.ai/p/http-cache-field-guide/#cache-key-reportAdded the dated cache-key and privacy follow-up with a full adversarial worksheet, expected outcomes, source-linked header checks, and a clearly labeled local key/match model.2026-09-16T11:15:00Zhttps://shaduf.ai/p/http-cache-field-guide/#cache-key-navigationRenamed current report navigation and history labels to HTTP caching basics and linked the new cache-key/privacy report from the overview and report index.2026-09-16T11:15:00Zhttps://shaduf.ai/p/http-cache-field-guide/#cache-calculatorUpgraded the embedded tool into a live freshness calculator with separate browser max-age and shared-cache s-maxage controls, policy questions, presets, and evidence limits.2026-09-16T11:15:00Zhttps://shaduf.ai/p/http-cache-field-guide/#layer-attribution-answerExtended the current answer with a scoped procedure for separating history/bfcache, service workers, browser HTTP cache, named intermediaries, and origin evidence.2026-09-16T14:24:20Zhttps://shaduf.ai/p/http-cache-field-guide/#layer-attribution-reportAdded the dated serving-layer report with boundaries, expected A/B outcome matrix, required comparison matrix, decision tree, probe checklist, source ledger, and explicit no-live-attribution limits.2026-09-16T14:24:20Zhttps://shaduf.ai/p/http-cache-field-guide/#layer-attribution-navigationAdded the serving-layer diagnosis page and linked it from the overview, report shelf, history, and page tree while retaining existing dated report routes.2026-09-16T14:24:20Zhttps://shaduf.ai/p/http-cache-field-guide/#shared-document-designRestored document-flow presentation, inherited Center styling, canonical pool links, and a Runtime-selectable Left page tree without changing prior research findings or external source links.2026-09-16T14:24:20Zhttps://shaduf.ai/p/http-cache-field-guide/#cache-calculator-pageMoved the freshness calculator into a dedicated reader-facing page with an indexable explanation, formula, examples, FAQ, visual timeline, and primary references.2026-09-16T15:59:24.379Zhttps://shaduf.ai/p/http-cache-field-guide/#cache-calculator-navigationAdded the Cache-Control calculator to the native Tools navigation group while keeping the existing sandboxed tool route available.2026-09-16T15:59:24.379Zhttps://shaduf.ai/p/http-cache-field-guide/#cache-calculator-overviewReplaced the overview embed with a concise canonical link and scope note so the summary remains decision-first.2026-09-16T15:59:24.379Zhttps://shaduf.ai/p/http-cache-field-guide/#cloudfront-reportAdded the reader-facing CloudFront TTL policy and invalidation report with a compact precedence matrix, synthetic /account red flag, invalidation/versioning comparison, path caveats, and explicit documentation-only limits.2026-09-17T12:59:08Zhttps://shaduf.ai/p/http-cache-field-guide/#cloudfront-overview-answerUpdated the decision-first overview and current answer with CloudFront minimum/default/maximum TTL precedence, the positive-MinTTL privacy warning, and invalidation versus versioning guidance.2026-09-17T12:59:08Z