速度
浏览器缓存
为何重要
Browser caching lets returning visitors reuse files instead of downloading them again.
如何修复
- Send Cache-Control headers with long lifetimes for versioned static files (CSS, JS, images, fonts).
使用以下工具检查
- HTTP Headers Checker – View all HTTP response headers for a URL, with notes on the ones that matter for SEO.
评分：通过的检查获得全部权重，警告获得一半，错误则不得分。 SEO 评分如何运作