When you’re building a modern web experience, it’s important to measure, optimize, and monitor if you’re to get fast and stay fast.

Performance plays a significant role in the success of any online venture, as high performing sites engage and retain users better than poorly performing ones.

Sites should focus on optimizing for user-centric happiness metrics.

Tools like Lighthouse (baked into web.dev!) highlight these metrics and help you take the right steps toward improving your performance.

To “stay fast”, set and enforce performance budgets to help your team work within the constraints needed to continue loading fast and keeping users happy after your site has launched.

当您建立现代的Web体验时，衡量，优化和显示器，如果您要快速速度并保持快速，这非常重要。

性能在任何在线企业的成功中发挥着重要作用，因为高性能的网站比表现不佳的网站比表现不佳的人更好。

网站应专注于优化以用户为中心的幸福指标。

像灯塔这样的工具（烤成web.dev！）突出显示这些指标，并帮助您采取正确的步骤来提高您的性能。

要“保持快速”，设置和实施性能预算，以帮助您的团队在您在网站推出后继续加载快速加载快速和保持用户快乐的约束中的制约因素。

What you’ll learn

Introduction#