| title | IHttpServer::FlushKernelCache Method |
|---|---|
| description | Learn how the IHttpServer::FlushKernelCache method flushes the kernel cache for a specific Uniform Resource Identifier (URI). |
| ms.date | 10/07/2016 |
| ms.assetid | 935f7c14-8427-1283-859c-fbb0f45dabeb |
Flushes the kernel cache for a specific Uniform Resource Identifier (URI).
virtual HRESULT FlushKernelCache(
IN PCWSTR pszUrl
) = 0; pszUrl
[IN] A pointer to a string that contains the URI to flush.
An HRESULT. Possible values include, but are not limited to, those in the following table.
| Value | Description |
|---|---|
| NO_ERROR | Indicates that the operation was successful. |
| ERROR_INVALID_PARAMETER | Indicates that an invalid value was passed in one of the parameters. |
| ERROR_NOT_SUPPORTED | Indicates that the operation is not supported within the current context. |
Developers can use the FlushKernelCache method to remove a specific URI from the kernel cache.
Note
The FlushKernelCache method differs from the IHttpResponse::DisableKernelCache method, which disables kernel caching for the URI that is processing the current response.
The following code example demonstrates how to create an HTTP module that uses the FlushKernelCache method to flush the kernel cache for the /default.aspx URI.
[!code-cppIHttpServerFlushKernelCache#1]
Your module must export the RegisterModule function. You can export this function by creating a module definition (.def) file for your project, or you can compile the module by using the /EXPORT:RegisterModule switch. For more information, see Walkthrough: Creating a Request-Level HTTP Module By Using Native Code.
You can optionally compile the code by using the __stdcall (/Gz) calling convention instead of explicitly declaring the calling convention for each function.
| Type | Description |
|---|---|
| Client | - IIS 7.0 on [!INCLUDEwinvista] - IIS 7.5 on Windows 7 - IIS 8.0 on Windows 8 - IIS 10.0 on Windows 10 |
| Server | - IIS 7.0 on [!INCLUDEwinsrv2008] - IIS 7.5 on Windows Server 2008 R2 - IIS 8.0 on Windows Server 2012 - IIS 8.5 on Windows Server 2012 R2 - IIS 10.0 on Windows Server 2016 |
| Product | - IIS 7.0, IIS 7.5, IIS 8.0, IIS 8.5, IIS 10.0 - [!INCLUDEiisexp75], [!INCLUDEiisexp80], [!INCLUDEiisexp100] |
| Header | Httpserv.h |
IHttpServer Interface
IHttpResponse::DisableKernelCache Method
IHttpResponse::GetCachePolicy Method
IHttpResponse::GetKernelCacheEnabled Method