Enable cache

Enables the IIS output cache, which stores cached responses in user mode.

	Note
	The IIS output cache is similar to the ASP.NET output cache. However, this IIS cache is a native output cache that offers increased performance over the managed output cache in ASP.NET.

Enable kernel cache

Enables the kernel cache, which stores cached responses in kernel mode. Performance is improved when responses are returned from the kernel cache without transitioning to user mode.

Maximum cached response size (in bytes)

Specifies the maximum size of a cached response for both the user-mode and kernel-mode caches. The default value is 262144 bytes. This field is enabled at the server level only; it is read-only at all other levels.

Cache size limit (in MB)

Configures the size limit of both the user-mode and kernel-mode caches. You can type a size (in MB) or type 0. If you type 0, IIS uses half of the available physical memory or virtual memory, whichever is less. This field is enabled at the server level only; it is read-only at all other levels.