= Ribbon Component
:page-source: components/camel-ribbon/src/main/docs/ribbon.adoc

*Available as of Camel version 2.18*

The Ribbon component provides use of Netflix Ribbon for client side load balancing.

Maven users will need to add the following dependency to their `pom.xml`
for this component:

[source,xml]
----
<dependency>
    <groupId>org.apache.camel</groupId>
    <artifactId>camel-ribbon</artifactId>
    <version>x.x.x</version>
    <!-- use the same version as your Camel core version -->
</dependency>
----

This component helps applying load balancing feature at the client side when using http://camel.apache.org/servicecall-eip.html[ServiceCall EIP].

== Configuration

* *Programmatic*
+
[source,java]
----
RibbonConfiguration configuration = new RibbonConfiguration();
configuration.addProperties("ServerListRefreshInterval", "250");

RibbonLoadBalancer loadBalancer = new RibbonLoadBalancer(configuration);

from("direct:start")
    .serviceCall()
        .name("myService")
        .loadBalancer(loadBalancer)
        .consulServiceDiscovery()
        .end()
    .to("mock:result");
----

* *Spring Boot*
+
[source,properties]
.application.properties
----
camel.cloud.ribbon.properties[ServerListRefreshInterval] = 250
----
+
[source,java]
.routes
----
from("direct:start")
    .serviceCall()
        .name("myService")
        .ribbonLoadBalancer()
        .consulServiceDiscovery()
        .end()
    .to("mock:result");
----

* *XML*
+
[source,xml]
----
<route>
    <from uri="direct:start"/>
    <serviceCall name="myService">
        <!-- enable ribbon load balancer -->
        <ribbonLoadBalancer>
            <properties key="ServerListRefreshInterval" value="250"/>
        </ribbonLoadBalancer>
    </serviceCall>
</route>
----