Preloading Pages Just Before They are Needed

A typical process for users to browse websites: view the page, click on the link, and the browser loads a new page. Of course, this assumes there is no special case like single page application (SPA), which still follows this process, but the browser does not load new pages—the client simulates this process for faster transitions.

What should I do if a new page can be loaded before the user clicks on the link, then when they click, the next page will load much faster? There are two projects worth paying attention to trying to solve this problem:

• quicklink: Detect visible links, wait for the browser to be idle, and prefetch these links if they are not on slow connections.
• instant.page: If you hover your mouse over the link for 65 milliseconds, it will preload the link. The new 2.0 version allows you to configure time delays, or whether to wait for a click or press before preloading.

Combining these with technological improvements such as drawing keeping, building a SPA architecture just for speed advantage may become unnecessary (although it may still be desirable for other reasons, such as code segmentation, putting the responsibility for routing on front-end developers, etc.).

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