Radware Alteon Application Manual page 274

Alteon Application Switch Operating System Application Guide
Server Load Balancing
Rules are ordered in the rule list according to their index number. Radware recommends putting
rules that are matched often at the top of the list to optimize performance. See the compression URL
rule list statistics per rule to determine which rules are matched more or less often.
The following are the types of compression rule lists you can associate with a compression policy:
• URL Exceptions Rule List—This is a list of compression exceptions rules based on an object's
URL (file/folder). These rules are the primary filter for evaluating exceptions. Browser exception
and browser limitation rules are only evaluated after the URL exceptions.
For example, the following rules result in all files in images folder being compressed except for
image1.jpg:
rule1: /images/image1.jpg, do not compress
rule2: /images/, compress
• Browser Exceptions Rule List—This is a list of compression exception rules based on
user-agent (browser type) and/or content-type (file type). These rules skip the compression of
certain objects that create issues when uncompressed or that require too many resources with
little benefit (for example, PDFs and PPT files). Browser exception rules are evaluated after the
URL exception rules are evaluated, so they are more general than the URL exceptions.
For example, the following rules result in all files in images folder being compressed except for
image1.jpg:
rule1: /images/image1.jpg, do not compress
rule2: /images/,compress
• Predefined Browser Exceptions Rule List—This is a list of compression browser exception
rules that address known issues in commonly used browsers which cause them to mishandle
specific types of compressed content. The predefined browser limitation rule list cannot be
modified or deleted. In order to customize it, you should first copy the rule list to a new browser
exceptions rule list. This exception list is evaluated last, after the URL exception and browser
exception lists, and therefore can be overridden by both the user-defined browser exception rule
list and the URL rule list.
When there are both URL exception rule lists and browser exception rule lists associated with a
compression policy, compression occurs only if both rule lists result in no exceptions.
Common Compression Policy Use Cases
Example 1: Configuring a Basic Compression Service
1. Before you can configure a compression service, ensure that Alteon is configured for basic SLB:
— Define an IP interface.
— Enable SLB.
— Assign an IP address to each of the real servers in the server pool.
— Define each real server.
— Assign servers to real server groups.
— Define server port and client port.
— Define virtual server
For more information on how to configure your network for SLB, see
page 165.
2. Define the compression policy which will govern the compression behavior:
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Server Load Balancing,
Document ID: RDWR-ALOS-V2900_AG1302