Cisco Cisco ACE Application Control Engine Module 白皮書
Solution Overview
All contents are Copyright © 1992–2008 Cisco Systems, Inc. All rights reserved. This document is Cisco Public Information.
Page 4 of 8
Application Acceleration
Application switching products should use a range of acceleration capabilities to boost remote
end-user application response times. Some of the more advanced technologies include
compression, flash-forward, and delta encoding features. These functions minimize distance-
imposed latency when application requests are served to remote users by reducing the number of
round-trip data transfers and messages required for any HTTP-based application. These functions
also optimize bandwidth by delivering to the client just the differences between cached original
pages and updated new pages. Customers using these acceleration technologies can achieve up
to 300 percent improvement in response times.
According to the 451 Group, XML accounted for 15 percent of data center traffic in 2005, and by
2008 XML is expected to account for 50 percent of data center traffic. An XML message is 3 to 10
times larger than an equivalent binary message, which makes servers and infrastructure
vulnerable to overload as XML traffic increases. General-purpose servers are expensive resources
that should not be used for computationally intensive XML functions. Hence, another crucial
differentiator in choosing a solution is whether the solution can accelerate XML applications (Table
5). Most solutions can.
Table 5.
XML Capabilities
Application Acceleration
Cisco
Ask Point Product
Vendor
Vendor
XML Acceleration Support
Hardware-Based Compression Support