Technical data

Brocade ServerIron ADX Advanced Server Load Balancing Guide 89

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Cache persistence using URL hashing

The fields described in Table 5 provide statistics about HTTP keep-alive.

You can clear the HTTP keep-alive counter on a ServerIron ADX as shown in the following example.

ServerIronADX#clear server keep-alive statistics

Syntax: clear server keep-alive statistics

Cache persistence using URL hashing

The ServerIron ADX enables traffic distribution among cache servers in a TCS setup after

inspecting and hashing based on the request URL. This enables cache persistence based on the

requested URL and minimizes duplication of content among multiple cache servers.

The hashing can be done on a complete URL or a portion of the URL. The following choices are

available:

• Complete URL

• Path only

• Path and parameters only

• Host only

• Host and path only

Additionally, you can identify a sub-portion of either the complete URL or the host portion of the

URL to perform the hashing on.

The hashing method is specified within a CSW policy definition as an action to be taken when a

match is made.

NOTE

In previous versions of the ServerIron ADX software, this feature was configured using the csw-hash

url command within the server cache-group configuration. This command is no longer available.

TABLE 5 HTTP keep-alive statistics

Field Description

Allocated from pool The number of instances when a server port was allocated

from the Keep-Alive pool.

Freed to pool The number of instances when a server port was freed to

the Keep-Alive pool.

Total TCBs in list

(appears in two locations)

The total number of Keep-Alive connections received by

the ServerIron ADX.