HttpExpires
HttpExpires specifies the expiration of HTML document content by returning the value to the browser in the HTML file header. The browser compares the givenvalue with the current date to determine whether to display a cached page or to request an updated page from the server. This property can be made relative, or dynamic, by using the format D,#SecondsUntilExpiration, with 0xFFFFFFFF indicating no expiration date. It can also be absolute, with the format S,ValidGMTString.
| Attribute Name | Attribute Value |
|---|---|
| XML Data Type | String |
| WMI Data Type |
String
|
| ADSI Data Type | String |
| ABO Data Type | String |
| ABO Metabase identifier |
MD_HTTP_EXPIRES
|
| Attributes | INHERIT |
| Default Value | d, 0x15180 |
| MetaFlagsEx | CACHE_PROPERTY_MODIFIED |
| User Type | IIS_MD_UT_FILE |
| StartingNumber | Not applicable |
| EndingNumber | Not applicable |
| ID | 6002 |
Configurable Locations
You can configure this property at the following locations in the IIS metabase.
| Metabase Path | IIS Admin Object Type |
|---|---|
| /LM/W3SVC/n/ROOT /LM/W3SVC/n/ROOT/virtual_directory_name |
IIsWebVirtualDir |
| /LM/W3SVC/n | IIsWebServer |
| /LM/W3SVC | IIsWebService |
| /LM/W3SVC/n/ROOT/file_name /LM/W3SVC/n/ROOT/virtual_directory_name/file_name |
IIsWebFile |
| /LM/W3SVC/n/ROOT/physical_directory_name /LM/W3SVC/n/virtual_directory_name/physical_directory_name |
IIsWebDirectory |
Code Example
For general code examples, please see Code Examples to Configure Metabase Properties