LGTM to extend experimentation M116 to M118 inclusive given clear artifacts towards shipping: spec draft, completed TAG review & requests for signals.
On Mon, May 29, 2023 at 10:47 PM Liviu Tinta <liviuti...@chromium.org> wrote: > Contact emails > > dome...@chromium.org, jbro...@chromium.org, liviuti...@chromium.org > > > Original I2E > > > https://groups.google.com/a/chromium.org/g/blink-dev/c/6gsc52WQgrU/m/qcTayjt6DAAJ > > No-Vary-Search Spec > > https://wicg.github.io/nav-speculation/no-vary-search.html > No-Vary-Search hint explainer > https://github.com/WICG/nav-speculation/blob/main/triggers.md#no-vary-search-hint > > Origin Trial > > https://developer.chrome.com/origintrials/#/view_trial/4146689356901384193 > > Summary > > We propose extending the "No-Vary-Search support in navigation prefetch > cache" origin trial. We decided to extend the experiment based on positive > feedback from the developer experimenting with the header. Discussions with > the developer resulted in additional functionality for this experiment in > the form of No-Vary-Search hint (see ChromeStatus entry: > https://chromestatus.com/feature/4887338302308352). > > We are planning to extend the experiment for 3 more milestones M116 to > M118 inclusive. > > Blink component > > Internals>Preload > <https://bugs.chromium.org/p/chromium/issues/list?q=component:Internals%3EPreload> > > Motivation > > The developer we are working with would like to experiment with > No-Vary-Search hint in the context of No-Vary-Search header to evaluate the > added impact of the new functionality. > > TAG review > > https://github.com/w3ctag/design-reviews/issues/797 > TAG review status > > Complete at this time. TAG didn't see any major issue and encouraged us to > continue experimenting. > > RisksInteroperability and Compatibility > > Gecko: No signal. Request for Standards Position: > https://github.com/mozilla/standards-positions/issues/717. > > WebKit: No signal. Informal positive signals from individual engineers at > TPAC 2022. Request for Standards Position: > https://github.com/WebKit/standards-positions/issues/106. > > Web developers: Positive. Google Search is interested in experimenting > with the header, specifically for the customizing server behavior > <https://github.com/WICG/nav-speculation/blob/main/no-vary-search.md#customizing-server-behavior> > use case. > > Other signals: > > 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. This is a new opt-in feature. > > > Debuggability > > The website owner can debug the feature in DevTools by making sure that, > when navigating to a prefetched page by using a URL that matches under > No-Vary-Search conditions, the navigation happens from the prefetch cache > by looking at the Size column in the Network tab. In case of success, when > hovering over the Size column in the Network tab of Dev Tools, they should > see: "Served from prefetch cache, resource size: yyyB" > > We are also working on a preloading panel (https://crbug.com/1410709) > which shows all ongoing preloads, including both the targeted URL and the > cached URL, if they differ due to No-Vary-Search. > > Is this feature fully tested by web-platform-tests > <https://chromium.googlesource.com/chromium/src/+/master/docs/testing/web_platform_tests.md> > ? > > Yes. WPTs landed under the > external/wpt/speculation-rules/prefetch/no-vary-search folder. > > Tracking bug > > crbug.com/1378075 > > crbug.com/1416659 > > Link to entry on the Chrome Platform Status > > https://chromestatus.com/feature/5071247189213184 > > https://chromestatus.com/feature/4887338302308352 > > > > -- > 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/CAHaAqYJ_qBTo-CO_Lx%3DL-cEC37JUaQ%2BrRRzKxRVoy-fjNBKR8A%40mail.gmail.com > <https://groups.google.com/a/chromium.org/d/msgid/blink-dev/CAHaAqYJ_qBTo-CO_Lx%3DL-cEC37JUaQ%2BrRRzKxRVoy-fjNBKR8A%40mail.gmail.com?utm_medium=email&utm_source=footer> > . > -- 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/CAL5BFfUr7wi1LxGxCsPpHM5_CR-N2vHkSbXEKYu88MFh0Nodtw%40mail.gmail.com.
