anchor.diff:  See the http://zookeeper.apache.org/doc/current/zookeeperStarted.html[installation
   documentation] for instructions on how to install Zookeeper.
   
  +Spring Cloud Zookeeper uses Apache Curator behind the scenes.
  +While Zookeeper 3.5.x is still considered "beta" by the Zookeeper development team,
  +the reality is that it is used in production by many users.
  +However, Zookeeper 3.4.x is also used in production.
  +Prior to Apache Curator 4.0, both versions of Zookeeper were supported via two versions of Apache Curator.
  +Starting with Curator 4.0 both versions of Zookeeper are supported via the same Curator libraries.
  +
  +In case you are integrating with version 3.4 you need to change the Zookeeper dependency
  +that comes shipped with `curator`, and thus `spring-cloud-zookeeper`.
  +To do so simply exclude that dependency and add the 3.4.x version like shown below.
  +
  +.maven
  +[source,xml,indent=0]
  +----
  +<dependency>
  +    <groupId>org.springframework.cloud</groupId>
  +    <artifactId>spring-cloud-starter-zookeeper-all</artifactId>
  +    <exclusions>
  +        <exclusion>
  +            <groupId>org.apache.zookeeper</groupId>
  +            <artifactId>zookeeper</artifactId>
  +        </exclusion>
  +    </exclusions>
  +</dependency>
  +<dependency>
  +    <groupId>org.apache.zookeeper</groupId>
  +    <artifactId>zookeeper</artifactId>
  +    <version>3.4.12</version>
  +    <exclusions>
  +        <exclusion>
  +            <groupId>org.slf4j</groupId>
  +            <artifactId>slf4j-log4j12</artifactId>
  +        </exclusion>
  +    </exclusions>
  +</dependency>
  +----
  +
  +.gradle
  +[source,groovy,indent=0]
  +----
  +compile('org.springframework.cloud:spring-cloud-starter-zookeeper-all') {
  +  exclude group: 'org.apache.zookeeper', module: 'zookeeper'
  +}
  +compile('org.apache.zookeeper:zookeeper:3.4.12') {
  +  exclude group: 'org.slf4j', module: 'slf4j-log4j12'
  +}
  +----
  +
   [[spring-cloud-zookeeper-discovery]]
   == Service Discovery with Zookeeper
   
  
positive.code: `org.springframework.cloud:spring-cloud-starter-zookeeper-config` enables
  autoconfiguration that sets up Spring Cloud Zookeeper Config.
  
  === Customizing
  
  Zookeeper Config may be customized by setting the following properties:
  
negative.code: 
  NOTE: For web functionality, you still need to include
  `org.springframework.boot:spring-boot-starter-web`.
  
  CAUTION: When working with version 3.4 of Zookeeper you need to change
  the way you include the dependency as described <<spring-cloud-zookeeper-install,here>>.
  
  === Registering with Zookeeper
  
  