import puppeteer from 'puppeteer'; async function ssr(url) { const browser = await puppeteer.launch({headless: true}); const page = await browser.newPage(); await page.goto(url, {waitUntil: 'networkidle0'}); const html = await page.content(); // serialized HTML of page DOM. await browser.close(); return html; } Why use Headless Chrome? You may be interested in Headless Chrome if: You've built a we
server-timing-demo.js @S1 �U �Z �U // see for screenshot: // https://twitter.com/paul_irish/status/829090506084749312 const http = require('http'); function requestHandler(request, response) { const headers = { 'Server-Timing': ` sql-1;desc="MySQL lookup Server";dur=100, sql-2;dur=900;desc="MySQL shard Server #1", fs;dur=600;desc="FileSystem", cache;dur=300;desc="Cache", other;dur=200;desc="Databa
FastAPI Utilities User Guide Get Help Development - Contributing Release Notes Source module: fastapi_utils.timing¶ The fastapi_utils.timing module provides basic profiling functionality that could be used to find performance bottlenecks, monitor for regressions, etc. There are currently two public functions provided by this module: add_timing_middleware, which can be used to add a middleware to a
This specification enables a server to communicate performance metrics about the request-response cycle to the user agent. It also standardizes a JavaScript interface to enable applications to collect, process, and act on these metrics to optimize application delivery. ## Introduction Accurately measuring performance characteristics of web applications is an important aspect of making web applicat
There's a lot of value in having user-centric metrics that you can measure, universally, on any given website. These metrics let you: Understand how real users experience the web as a whole. Compare your site to a competitor's. Track useful and actionable data in your analytics tools without needing to write custom code. Universal metrics offer a good baseline, but in many cases you need to measur
This page is a comprehensive reference of Chrome DevTools features related to analyzing performance. See Analyze runtime performance for a guided tutorial on how to analyze a page's performance using Chrome DevTools. Record performance You can record runtime or load performance. Record runtime performance Record runtime performance when you want to analyze the performance of a page as it's running
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