Site performance Optimization page first show

What is a page first show?

1, the first page shows a new user opens the Site page for the first time, and the browser does not have any cache for that page.

2, the first show is a site performance indicators, the first time to open the speed can give users to leave the first impression of the site.

3, if you clear the browser cache, re-visit the page, also equivalent to the first display.

What is the difference between first-time access and future repeat visits?

1, the first time to access a page, Css,js, pictures and other static resources are required to download the server.

2, second, third, nth times again, Css,js, pictures and other resources will be cached by the browser. So the first time after the visit will be faster than the first.

Why do you want to test first impressions?

1, test the first display of a page, can accurately reproduce the new user experience when opening the page.

2, first visit page, and second third ... The experience of the nth visit is different.

Therefore, do a good job of the first display of the page, the user experience has greatly improved.

How to do the first display of the page?

A common solution is to load on demand, that is, the page loads only the first screen of resources (mainly picture resources), with scrolling, and then requests to load more resources.

Site performance Optimization page first show