Universal performance metrics like largest contentful paint give us a lot of insight, but they don't capture the whole performance story. Depending on client and use case, it can be useful to define custom metrics to capture the performance of what's most important for your specific users on your specific site.

In her talk, Terry will provide examples of these specific metrics, and she'll go through ways we can implement these metrics—tools like the User Timing API, the Element Timing API, and Server-Timing headers.

RSCs, or React Server Components, are the latest innovation in React's ecosystem. It's a new architecture that leverages the benefits of both server-side and client-side rendering, but it also leverages streaming HTML to deliver the website contents as fast as possible.
In his talk, Lazar will explain what RSCs are, how they work under the hood, and how they impact the performance of the modern web.

Global web best practices often fall short in China's web environment.

In this session, Jodie will tackle common misconceptions when it comes to China web performance, demystify the elusive Great Firewall in technical terms, and provide an evaluation framework using real-world case studies.