HcMaxQueueLength

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.

Schema Attributes

Attribute Name	Value
ADSI/WMI Data Type	DWORD
ABO Data Type	DWORD_METADATA
Schema Default	1000
Internal Default	1000
Upper Bound	0
Lower Bound	Not specified
Internal ID	2224
Friendly ID	MD_HC_MAX_QUEUE_LENGTH
Property Attributes	NO_ATTRIBUTES
User Type	IIS_MD_UT_SERVER

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

Flags

There are no flags for this property.

Requirements

Client: Requires Windows XP Professional, Windows 2000 Professional, or Windows NT Workstation 4.0.

Server: Requires Windows Server 2003, Windows 2000 Server, or Windows NT Server 4.0.

Product: IIS

See Also