Load-Balancing Servlets and JSPs
You can configure load balancing either with an external load balancer or by using the WebLogic Server proxy plug-in. You can use the simple HttpClusterServlet that comes with WebLogic Server as a proxy plug-in for WebLogic Server. The plug-in maintains a list of server instances that host a clustered servlet or JSP, and it forwards HTTP requests to each cluster member on a round-robin basis. You can use the appropriate proxy plug-in for other HTTP servers. For example, you can use the Apache Server plug-in for Apache Server. To configure advanced load-balancing strategies, you can configure an external load balancer. An external load balancer must support passive or active cookie persistence, as well as SSL ...
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