KeyCDN 的「Resource Hints – What is Preload, Prefetch, and Preconnect?」這篇文章介紹了 Preload、Prefetch 與 Preconnect 這三者的差異。
Preconnect 從字面上看就很好理解,而 Preload 與 Prefetch 最大的差異:
Preload is different from prefetch in that it focuses on current navigation and fetches resources with high-priority.
主要在 priority 的差異。