Introducing edge servers
9
Caching data in edge servers
An edge server is designed to intercept the requests for Flash Media Server services from users
in a particular zone, collect or aggregate these requests, and transmit them to the origin server.
The origin server returns the results to the edge server, which in turn sends the data back to
the user’s client computer. The edge server also stores this information in its cache, where
other users or clients assigned to the same edge server can access it. In this scenario, fewer
requests for services are forwarded to the origin server.
The edge server caches data such as video streams and shared objects. When a user requests
data that is found in the edge server’s cache, it returns the data to the requesting client (the
user’s computer) without ever calling upon the origin server. This detour is transparent to the
user. The edge server is conserving bandwidth by not connecting to the origin server. In this
scenario, no demands are placed on the origin server.
Deploying edge servers in the DMZ
Edge servers may be deployed in the demilitarized zone (DMZ) of a corporate network. A
DMZ is an isolated network placed between an organization’s trusted network and the
Internet’s untrusted network. In this deployment, the edges function as proxy servers for all
Real Time Messaging Protocol (RTMP) traffic that flows through the organization’s network.
Deploying edge servers in the DMZ provides one more layer of defense between the user’s
Internet connection and the origin server. All traffic that comes from the Internet with Flash
Media Server as its destination must pass through an edge server.
Summary of Contents for FIREWORKS 2-USING FIREWORKS
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