Contact emails yu...@google.com, yu...@chromium.org, fer...@chromium.org
Explainer https://github.com/WICG/bfcache-not-restored-reason/blob/main/NotRestoredReason.md Specification https://github.com/whatwg/html/pull/9360 Design docs https://github.com/WICG/bfcache-not-restored-reason/blob/main/NotRestoredReason.md Summary NotRestoredReason API will report the list of reasons why a page is not served from BFcache in a frame tree structure, via PerformanceNavigationTiming API. Blink component UI>Browser>Navigation>BFCache <https://bugs.chromium.org/p/chromium/issues/list?q=component:UI%3EBrowser%3ENavigation%3EBFCache> TAG review https://github.com/w3ctag/design-reviews/issues/739 TAG review status Issues addressed Risks Interoperability and Compatibility Gecko: Defer (https://github.com/mozilla/standards-positions/issues/766) Once issues (standardized reasons & unsalvageable documents), they would switch to positive. WebKit: No signal (https://github.com/WebKit/standards-positions/issues/154) Web developers: Positive ( https://github.com/w3c/navigation-timing/issues/171#issuecomment-1062672989) Other signals: Positive from Origin Trial users: How likely are you to keep using this feature? 92% answered likely, 8% (1 vote) is unsure Security We do not report detailed information about cross-origin iframes. See Security and Privacy section <https://github.com/WICG/bfcache-not-restored-reason/blob/main/NotRestoredReason.md#security-and-privacy> in the explainer. WebView application risks Does this intent deprecate or change behavior of existing APIs, such that it has potentially high risk for Android WebView-based applications? No. Debuggability In DevTools console, try: performance.getEntriesByType('navigation')[0].notRestoredReasons; Will this feature be supported on all six Blink platforms (Windows, Mac, Linux, Chrome OS, Android, and Android WebView)? Yes. NotRestoredReasons API is available on all platforms including WebView, but back/forward cache is not enabled on WebView. So on WebView, NotRestoredReasons API should always say that the page is blocked from being restored from bfcache with the reason being something like “not supported”. (Currently it reports null due to a bug <https://bugs.chromium.org/p/chromium/issues/detail?id=1459533>) Is this feature fully tested by web-platform-tests <https://chromium.googlesource.com/chromium/src/+/main/docs/testing/web_platform_tests.md> ? Yes. https://source.chromium.org/chromium/chromium/src/+/main:third_party/blink/web_tests/external/wpt/performance-timeline/not-restored-reasons/ DevTrial instructions https://github.com/rubberyuzu/bfcache-not-retored-reason/blob/main/HowToTest.md Flag nameblink RunTimeEnabledFeature: BackForwardCacheSendNotRestoredReasons <https://source.chromium.org/chromium/chromium/src/+/main:third_party/blink/renderer/platform/runtime_enabled_features.json5;l=423?q=BackForwardCacheSendNotRestoredReasons%20-f:out&ss=chromium> Requires code in //chrome? False Tracking bug https://bugs.chromium.org/p/chromium/issues/detail?id=1326344 Launch bug https://launch.corp.google.com/launch/4200848 Estimated milestones Shipping on desktop 116 OriginTrial desktop last 114 OriginTrial desktop first 109 DevTrial on desktop 108 Shipping on Android 116 OriginTrial Android last 114 OriginTrial Android first 109 DevTrial on Android 108 Shipping on WebView 116 OriginTrial WebView last 114 OriginTrial WebView first 109 DevTrial on WebView 108 Anticipated spec changes Open questions about a feature may be a source of future web compat or interop issues. Please list open issues. https://github.com/whatwg/html/pull/9360 Link to entry on the Chrome Platform Status https://chromestatus.com/feature/5684908759449600 Links to previous Intent discussions Intent to prototype: https://groups.google.com/a/chromium.org/d/msgid/blink-dev/CAP-nMoGAzjUjzv3WmxcRpUSBgnA-AHQ05kh9gXc%2BQB8pRM6%2BfA%40mail.gmail.com Intent to Experiment: https://groups.google.com/a/chromium.org/d/msgid/blink-dev/CAP-nMoHe391sAB2PdbEVw9uiSPFxTB_EYsRizcPpZ7-pg16O0A%40mail.gmail.com Intent to Extend Experiment: https://groups.google.com/a/chromium.org/d/msgid/blink-dev/CAA5e698QcKZSthm%3Dz_4pi8cOzi4kfbx-AXveC%2BAKimUh-tMycA%40mail.gmail.com This intent message was generated by Chrome Platform Status <https://chromestatus.com/>. -- You received this message because you are subscribed to the Google Groups "blink-dev" group. To unsubscribe from this group and stop receiving emails from it, send an email to blink-dev+unsubscr...@chromium.org. To view this discussion on the web visit https://groups.google.com/a/chromium.org/d/msgid/blink-dev/CAP-nMoHYpT3sxWV%2BEipL5NcNSWy8fOdDdAroucmNb%3DZvxJWRBA%40mail.gmail.com.
