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Oracle® Fusion Middleware WebCenter Sites Installation Guide
11g Release 1 (11.1.1.8.0)

Part Number E29632-03
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8 Overview of Satellite Server

Satellite Server works with your WebCenter Sites system to provide the following benefits:

This chapter introduces you to the configurations that you implement in order to receive these benefits.

You can configure Satellite Server in the following ways:

This document contains the following sections:

8.1 Co-Resident

WebCenter Sites ships with a copy of Satellite Server that is automatically installed and enabled on the same machine as your WebCenter Sites software. This is your co-resident Satellite Server. The purpose of the co-resident Satellite Server is to provide development and management systems with the ability to simulate page delivery as it occurs on the active site (delivery system).

Co-resident Satellite Server provides a layer of caching in addition to that provided by the WebCenter Sites cache. Satellite Server and the WebCenter Sites caches work in tandem to provide double-buffered caching, where copies of cached pages are stored in both the Satellite Server and the WebCenter Sites caches. The disadvantage of this configuration is increased memory utilization, as there are now two copies of each object stored in memory. For more information about double-buffered caching, see the caching chapter of the Oracle Fusion Middleware WebCenter Sites Developer's Guide. Figure 8-1 illustrates a co-resident installation of Satellite Server.

We recommend setting your co-resident Satellite Server host to optimize the performance of your WebCenter Sites system, as described in Section 10.1, "Adjusting Caching Conditions."

Figure 8-1 Co-Resident Satellite Server Architecture

Description of Figure 8-1 follows
Description of "Figure 8-1 Co-Resident Satellite Server Architecture"

8.2 Remote

On delivery systems, you should set up one or more remote Satellite Server instances. At a minimum, a remote Satellite Server should be installed at the same geographic location as WebCenter Sites. For additional performance at remote geographic locations, additional remote Satellite Servers can be configured, as shown in Figure 8-2.

Figure 8-2 Remote Satellite Server Architecture

Description of Figure 8-2 follows
Description of "Figure 8-2 Remote Satellite Server Architecture"

Remote installations of Satellite Server provide several benefits in addition to allowing double-buffered caching:

For information on installing and configuring remote instances of Satellite Server, see Section 9, "Procedures for Installing Remote Satellite Servers."