Description

Sitecore CMS was not designed to work with enabled User-mode or Kernel-mode output caching in IIS and does not support its usage.

IIS Output Caching should never be enabled for the Content Management environment.

IIS Output Caching can be enabled in the Content Delivery environment, although doing so might cause various issues, such as:

• Requests to a Sitecore item might return data from a different Sitecore item.
• Outdated content might be shown for an item after publishing changes to it.
• Sitecore security checks might be bypassed and restricted content might potentially be shown to low-privileged users.

Solution

If additional server-side caching for dynamic Sitecore responses is required, it is recommended to enable such caching on the proxy or load balancer side.