[This is preliminary documentation and subject to change]

### HcExpiresHeader

This metabase property specifies the content of the HTTP Expires header that is sent with all requested compressed files, along with the Cache-Control header discussed in HcCacheControlHeader.

The combination of HcExpiresHeader and HcCacheControlHeader ensures that older clients and proxy servers will not attempt to cache compressed files.

Neither the header specified by HcCacheControlHeader, nor the header specified by HcExpiresHeader, will be sent with the response if the metabase property HcSendCacheHeaders is set to FALSE.

The Web service must be restarted before any changes to this property take effect.

Attribute Name | Attribute Value
Data Type | STRING
Attributes | NO_ATTRIBUTES
Default Value | null
MetaFlagsEx | CACHE_PROPERTY_MODIFIED
User Type | IIS_MD_UT_SERVER
StartingNumber |
EndingNumber |
ID | 2212

### Access Locations

This property is accessible at the following locations:

Metabase Path | IIS Admin Object Type

### IIS Admin Base Object Information

The following table lists additional information required only for code that uses the IIS Admin Base Object.

Metabase identifier | MD_HC_EXPIRES_HEADER
Data type | STRING
User type | IIS_MD_UT_SERVER

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