How to Set CACHE expiration time in IIS

I,Open IISManager

II,Select the website you want to set and click Properties to open the site properties menu.

III,Click HTTPHeader Tab

IV,ClickEnable content expiration

For example, set the expiration time to 30 minutes,Expired after this time periodEnter 30,UnitSelect minute

Through the above operations, you can customize the CACHE time for the entire website. You can also set the CACHE time for a directory on the website, for example, when you select a site for the image directory, select an image folder, and then select properties. The subsequent operations are the same as those of 3-4.