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The Load-balanced Endpoint distributes the messages (load) arriving at it among a set of listed endpoints or static members by evaluating the load balancing policy and any other relevant parameters.

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XML Configuration

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You can configure the Load-balance endpoint using XML. Click on the "Switch to source view" link in the "Load Balance Group" page.

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<session type="http|simpleClientSession"/>?
<loadBalance [policy="roundRobin"] [algorithm="impl of org.apache.synapse.endpoints.algorithms.LoadbalanceAlgorithm"]
        [failover="true|false"]>
    <endpoint .../>+
    <member hostName="host" [httpPort="port"] [httpsPort="port2"]>+
</loadBalance>

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1. In the "Add Endpoint" list, click "Load Balance Group Endpoint" (See Adding an Endpoint). The "Load Balance Group Endpoint" page appears.

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The following fields are specific to the Load Balance Group Endpoint:

  • Endpoint Name - A unique name of the endpoint.
  • Algorithm - Either a default "Round-robin" or custom loaded algorithm of the group. See more information about this algorithm in the article.
  • Session Management- A session management method from the load balancing group. The possible values are:
    • None - Session management is not used.
    • Transport - Session management is done on the transport level using HTTP cookies.
    • SOAP - Session management is done using SOAP sessions.
    • Client ID - Session management is done using an ID sent by the client.
  • Session Timeout(ms) - Session timeout in milliseconds.
  • Load Balance Endpoint Properties - See Adding an Endpoint.

2. Click "Add Endpoint."

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3. A shortcut menu with the available endpoints appears.

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4. Click on the endpoint you want to add as a Load Balance Group Endpoint. A tab with the fields relevant to the selected endpoint appears.

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See the details of child endpoints in Address Endpoint, WSDL Endpoint, Failover Endpoint.

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You can add as many endpoints as you need to the load balancing group.

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Description of the Load-balance Endpoint in WSO2 ESB.