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Explainer https://github.com/explainers-by-googlers/declarative-performance-observer Specification No information provided Summary The Declarative Performance Observer proposes a reliable browser-resident telemetry system that reports of performance metrics from navigation initiation to page termination. By using a declarative HTTP response header, it ensures that data is captured even in scenarios where the request failed due to the network error or the renderer process is killed by the OS. Blink component Blink>PerformanceAPIs Web Feature ID performance Motivation Currently, web developers face significant challenges in measuring the full end-to-end reliability of user journeys, particularly abandoned navigations that occur before JavaScript execution or after a session terminates. Existing web APIs are limited by their dependency on JavaScript, meaning that early failures like DNS timeouts or connection errors remain invisible to the site. Furthermore, capturing metrics during abrupt terminations—such as renderer crashes due to memory pressure or sudden tab closures—is unreliable, as beacons sent at these moments are often lost. Initial public proposal https://github.com/WICG/proposals/issues/280 Goals for experimentation None Requires code in //chrome? False Tracking bug https://crbug.com/505208781 Launch bug https://launch.corp.google.com/launch/4465220 Estimated milestones No milestones specified Link to entry on the Chrome Platform Status https://chromestatus.com/feature/6594955352080384?gate=5197968652238848 This intent message was generated by Chrome Platform Status. -- 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 [email protected]. To view this discussion visit https://groups.google.com/a/chromium.org/d/msgid/blink-dev/69f31432.050a0220.3ab19.0b38.GAE%40google.com.
