Poor performance negatively impacts users with slow internet or low-end devices and directly harms business revenue and signups.
Key performance indicators like Time to Interactive and First Contentful Paint translate technical measurements into the perceived user experience.
Establish clear, aggressive targets for metrics like JavaScript bundle size and Time to Interactive to guide optimization efforts.
Performance testing can be categorized into proactive (during development), reactive (in CI/CD), and passive (continuous monitoring) approaches.
Use browser dev tools for network throttling and tools like Webpack Bundle Analyzer to identify large dependencies during local development.
Integrate automated Lighthouse and WebPageTest runs into your CI/CD pipeline to track performance KPIs and enforce budgets on every build.
Employ external services like New Relic or Calibre to continuously monitor live site performance and gather real-user data over time.
Building a performance-focused culture relies on collecting data, automating everything, and fostering developer empathy through practices like "2G Tuesdays".
Wilken GmbH
Ulm, Germany
25:38Ramona Schwering
1:06:20Chris Heilmann, Daniel Cranney & Jan Deppisch
14:44Chris Heilmann
54:23Ramona Schwering
40:24Clemens Helm
58:26Markus Oberlehner
59:03Florian Rappl
58:59Ines Akrap
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