Red Hat NETSCAPE ENTERPRISE SERVER 6.0 - NSAPI PROGRAMMER GUIDE Guide d'installation télécharger pdf (Page 52)

Overview

EAServer

In Figure 4-2, the Web server redirector has an entry in the redirector

configuration file that directs requests for the “examples” Web application to

three application servers: Jag1, Jag2, and Jag3. Requests for the Web

application are distributed evenly across all three servers.

Figure 4-2: redirector configuration file entry

Failover and detecting unavailable application servers

The redirector provides failover for Web applications. However, to achieve

transparent failover, you must mark your Web application as distributable in

EAServer using EAServer Manager. This allows the

HttpSession object created

by the Web application to be visible to other application servers. See Chapter

21, “Creating Web Applications,” in the EAServer Programmer’s Guide for

information about distributable Web applications.

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Red Hat NETSCAPE ENTERPRISE SERVER 6.0 - NSAPI PROGRAMMER GUIDE Guide d'installation Page 52