Beta
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网页加载速度优化详解：dns-prefetch、preconnect、prefetch/preload、prerender
这些标签，其实都是为了优化网页加载速度的。虽然相对如今动辄百兆千兆的网速来讲，这些优化对网页加载速度提升并不明显，但是对于那些网络条件不好的用户来说，一点点的优化就能带来明显的舒适。
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