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Comtech EF Data / Stampede
1.3.7 Static Caching
Caching brings information closer to the end-user by storing recently accessed data in local memory or on
hard disk, reducing the time it takes to bring back needed information, Improving the users' experience by
speeding the page load times. While today's browsers maintain their own cache, they tend to be overly
conservative. This means they will error on the side of requesting a new piece of data or object, usually
when it really hasn't been changed. This not only impacts response time to the end-user, but also
saturates bandwidth with unnecessary data transmissions.
The FX Series uses caching to maintain copies of routinely accessed data to eliminate unnecessary
requests to Web and application servers, and from going over limited satellite links. By keeping local
copies of frequently requested content, the FX Series allows organizations to significantly reduce their
upstream bandwidth usage and cost, while improving performance. The FX Series acts as an intermediary
from end-users requesting content (such as a file, web page, or other resource) from servers.
Some of the key benefits include:
•
Reducing bandwidth consumption
•
Keeping servers behind the FX Series anonymous for security purposes
•
Delivering fast access to content
1.3.8 TCP Optimization
Advanced protocol optimizations drive significant improvements in bandwidth efficiencies and time
savings (reducing payload and latency). WAN optimization and application acceleration technologies are
deployed to improve satellite network performance and increase the amount of applications and users
that can be delivered over the satellite link. The FX Series manages all TCP sessions, and handles the
establishing and tearing down of TCP connections locally (at LAN speeds) to avoid satellite network
congestion problems. This helps to increase link utilization and improve the user experience. TCP
termination offloads the responsibility from servers having to handle the overhead imposed by the
volume of TCP connections from web applications.
Additionally, application level multiplexed TCP streams take advantage of all other TCP or protocol
optimization done at the link level, and application-level handshakes are eliminated by consolidating
transaction requests.
Benefits include:
•
Increases server capacity
•
Reduces the amount of traffic sent over satellite links
•
Keeps the satellite links maximized for optimum utilization
•
Dramatically reduces transaction TCP turns (requests and responses) that bottleneck
satellite links
FX Series Administration Guide - Version 6.2.2
Chapter: Overview - FX Series
Section: Single-Sided Solution
28
MN-FXSERIESADM6 Rev 6
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