How Windows IIS sets the cache expiration time for a CDN

1. Open IIS Manager
2, select the site you want to set click Properties, Open the Site Properties menu
3, click the HTTP Headers tab
4, click Enable Content Expiration

such as: Set 30 minutes after the expiration of this time period after the expiration of 30, the unit select minutes
Through the above operation, complete the entire site cache time customization settings, in addition, you can pin the site of a directory set cache time, such as the picture directory settings, in the first step to select the site, change to select a picture folder, and then select Properties, follow-up operation and 3-4.