Web Performance API

Web Performance API

性能监测/性能优化

https://developer.mozilla.org/en-US/docs/Web/API/Performance

https://developer.mozilla.org/en-US/docs/Web/API/Window/performance

window.performance;

performance.timing

performance.navigation

performance.memory

performance.getEntries();


performance.now(); 
performance.toJSON();

Performance Timeline

https://developer.mozilla.org/en-US/docs/Web/API/Performance_Timeline

Performance Timeline API定义了Performance接口的扩展，以支持应用程序内的客户端延迟测量

Navigation Timing API

https://developer.mozilla.org/en-US/docs/Web/API/Navigation_timing_API

Navigation Timing API提供的数据可用于衡量网站的性能

Navigation Timing

W3C Recommendation 17 December 2012

https://www.w3.org/TR/navigation-timing/

Navigation Timing Level 2

W3C Editor's Draft 21 January 2020

https://w3c.github.io/navigation-timing/

https://www.w3.org/TR/navigation-timing-2/

User Timing API

https://developer.mozilla.org/en-US/docs/Web/API/User_Timing_API

用户计时界面允许开发人员创建特定于应用程序的时间戳，这些时间戳是浏览器性能时间表的一部分

Resource Timing API

https://developer.mozilla.org/en-US/docs/Web/API/Resource_Timing_API

资源计时接口使您能够检索和分析有关应用程序资源加载的详细网络计时数据

refs

https://blog.cloudflare.com/browser-performance-api/

https://developers.google.com/web/fundamentals/performance/navigation-and-resource-timing

https://www.w3.org/TR/navigation-timing/

https://www.w3.org/2019/11/web-roadmaps/mobile/performance.zh.html

埋点/上报

1. 使用的img标签get请求

2. navigator.sendBeacon

https://developer.aliyun.com/article/752954

前端监控平台 & 架构

1px gif

https://www.cnblogs.com/xgqfrms/p/13090118.html

Transparent.gif

Transparent.gif ‎(1 × 1 pixels, file size: 42 bytes, MIME type: image/gif)

https://commons.wikimedia.org/wiki/File:Transparent.gif

https://upload.wikimedia.org/wikipedia/commons/c/ce/Transparent.gif

Beacon API

https://www.cnblogs.com/xgqfrms/p/13599628.html

refs

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