Configure a server topology such that the workload for web service
clients that use the WS-Notification standard is balanced across the available
resources.
About this task
WS-Notification enables server topologies in which web service
clients connecting to the notification broker service are distributed across
a set of logically equivalent servers. This configuration is described in
the Network deployment of WS-Notification topology. You
achieve this configuration by deploying a WS-Notification service across multiple
servers in a network deployment environment, then configuring a
WebSphere® Application Server proxy
server as the central point to which applications connect, and providing it
with the knowledge of which servers should receive client requests (that is,
where the WS-Notification service points are configured).
To configure
a distributed connected servers WS-Notification solution, complete the following
steps:
Procedure
-
Use the task Configuring a WS-Notification service for use only by WS-Notification applications to create a fully-configured WS-Notification service that
contains two or more WS-Notification service points on different servers.
-
Create a proxy server inside the cell on which the WS-Notification
service is defined.
After the proxy is created you must configure
it to route requests to the cluster, which might include configuring
the virtual host settings.
-
Ensure that the URL root of each endpoint accurately reflects the details of the proxy server, so that applications requesting the WSDL for the service use the proxy server as the external entry point to the service.
For information about how to do this, see one of
the following topics:
Results
Requests for the notification broker service are automatically shared
across the available servers. When affinity with a particular server is established,
for example by creating a subscription, information is stored in the WS-Addressing
endpoint reference given to the application client. Consequently, subsequent
requests that relate to that subscription are automatically returned to the
same server.