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HcMaxQueueLength Metabase Property

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Applies To: Windows Server 2003, Windows Server 2003 with SP1

IIS performs on-demand compression of static content in the background. When a static file is requested, and IIS has determined that a previously compressed version of the requested file does not already exist in the compression directory, the request is put into a simple FIFO (first in, first out) queue. The HcMaxQueueLength property specifies how many concurrent background compression requests can be in the queue. If the queue is full, additional compression requests are ignored until there is room in the queue.

If HcMaxQueueLength is set to 4294967295, there is no limit to the number of pending requests in the queue.

The metabase represents unlimited as the DWORD value of 4294967295 (0xFFFFFFFF); however, VBScript represents unlimited in hexadecimal format as &HFFFFFFFF. Previous versions of IIS represented unlimited as -1.

Attribute Name Attribute Value

XML Data Type

DWORD

WMI Data Type

SINT32

ADSI Data Type

DWORD

ABO Data Type

DWORD

ABO Metabase Identifier

MD_HC_MAX_QUEUE_LENGTH

Attributes

NO_ATTRIBUTES

Default Value

1000

MetaFlagsEx

CACHE_PROPERTY_MODIFIED

User Type

IIS_MD_UT_SERVER

ID

2224

Configurable Locations

You can configure this property at the following locations in the IIS metabase.

Metabase Path IIS Admin Object Type

/LM/W3SVC/Filters/Compression/Parameters

IIsCompressionSchemes

Code Example

For general code examples, see Code Examples to Configure Metabase Properties.