user experience three elements: don’t let me wait! Don’t make me think! Don’t bother me!
, don’t make me wait for
has done a lot of research showing that the most satisfying time for users to open a web page is 2-5 seconds. If you wait for more than 10 seconds, 99% of the users will close the page. May say so, you also do not have too many feelings, then, I list a set of data: Google site slow access speed every 400ms will cause the user search requests fell 0.59%; Amazon per 100ms site delay will lead to revenue decline 1%; YAHOO if 400ms delay will lead to the decline of 5-9% flow.
? How are you feeling now? Is it time to do the test?.
you may ask: what causes a slow site opens? What method is solved? Don’t worry, I’m eleven. The following are some technical aspects, you need to read patiently.
1, reduce the number of HTTP requests
so you want to increase the speed of page opening, you have to reduce the number of HTTP requests, there are 3 ways:
1) reduce unnecessary HTTP requests, such as replacing fillet pictures with CSS fillets, and reducing the use of pictures.
3) to optimize the cache, no change page elements (such as the header, footer etc.), the user to visit again when there is no need to download, read directly from the browser cache can be.
2, using CDN (Content, Delivery, Network, content distribution network)
CDN consists of a series of Web servers scattered across different geographical locations that specify a server response to user requests based on how close they are to the network. When your website pictures a lot of things, just like to use CDN, such as the current electricity supplier web site, almost all in use CDN.
3, compressed page elements
The smaller the element in the
page, the less time it takes to download, which is well understood. Now more mature and flow of compressed web pages, through the Gzip, my own practical experience to see >