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sidebar_position: 6 title: Use Different Data-Sync Strategy keywords: [“soul”] description: use different data-sync strategy

Features

• Data synchronization is the key of gateway high performance, which is to sync ‘soul-admin’ config data into the JVM memory of soul cluster.
• Implementation principles, pls refer to：dataSync。
• In the article, the gateway is the environment you setup. please refer to：Environment Setup.

Websocket sync（default method，recommend）

• gateway setting（note:restart）

  • Add these dependencies in pom.xml：

    <!--soul data sync start use websocket-->
    <dependency>
      <groupId>org.dromara</groupId>
      <artifactId>soul-spring-boot-starter-sync-data-websocket</artifactId>
      <version>${last.version}</version>
    </dependency>
    

  • add these config values in springboot yaml file:

    soul :
      sync:
          websocket :
               urls: ws://localhost:9095/websocket
    #urls: address of soul-admin，multi-address will be splitted with (,).
    

  • soul-admin config, enable this parameter --soul.sync.websocket='' in soul admin, then restart service.

    soul:
      sync:
         websocket:
    

• When the connection is established, getting the full data once,then adding and upating data subsequently, which is a good performance.

• Support disconnection and reconnection (default 30 sec).

Zookeeper Sync

• gateway setting（note: restart）

  • Add these dependencies in pom.xml:

    <!--soul data sync start use zookeeper-->
      <dependency>
           <groupId>org.dromara</groupId>
            <artifactId>soul-spring-boot-starter-sync-data-zookeeper</artifactId>
            <version>${last.version}</version>
      </dependency>
    

  • Add these dependencies in springboot yaml file:

    soul :
      sync:
          zookeeper:
               url: localhost:2181
               sessionTimeout: 5000
               connectionTimeout: 2000
    #url: config with your zk address, used by the cluster environment, splitted with (,).
    

  • soul-admin config: configure the soul-admin's starting parameter with --soul.sync.zookeeper.url='your address',then restart the service.

    soul:
      sync:
        zookeeper:
            url: localhost:2181
            sessionTimeout: 5000
            connectionTimeout: 2000
    

  • It is good to use ZooKeeper synchronization mechanism with high timeliness, but we also have to deal with the unstable environment of ZK, cluster brain splitting and other problems.

Http long-polling sync

• gateway setting（note:restart）

  • Add these dependencies in pom.xml：

    <!--soul data sync start use http-->
      <dependency>
           <groupId>org.dromara</groupId>
            <artifactId>soul-spring-boot-starter-sync-data-http</artifactId>
            <version>${last.version}</version>
      </dependency>
    

  • add these config values in your springboot yaml file:

    soul :
        sync:
            http:
                 url: http://localhost:9095
    #url: config with your soul-admin's ip and port url, pls use (,) to split multi-admin cluster environment.
    

  • soul-admin config, configure the soul-admin's starting parameter with --soul.sync.http='', then restart service.

    soul:
      sync:
         http:
    

• HTTP long-polling makes the gateway lightweight, but less time-sensitive.

• It pulls according to the group key, if the data is too large, it will have some influences, a small change under a group will pull the entire group.

• it may hit bug in soul-admin cluster.

Nacos sync

• gateway setting（note:restart）

  • Add these dependencies in your pom.xml：

    <!--soul data sync start use nacos-->
      <dependency>
           <groupId>org.dromara</groupId>
            <artifactId>soul-spring-boot-starter-sync-data-nacos</artifactId>
            <version>${last.version}</version>
      </dependency>
    

  • add these config values in the springboot yaml file:

     soul :
         sync:
            nacos:
                 url: localhost:8848
                 namespace: 1c10d748-af86-43b9-8265-75f487d20c6c
                 acm:
                   enabled: false
                   endpoint: acm.aliyun.com
                   namespace:
                   accessKey:
                   secretKey:
     # url: config with your nacos address, pls use (,) to split your cluster environment.
     # other configure，pls refer to the naocs website.
    

    • soul-admin config: passing values one by one with ‘--’ operator in the soul-Admin startup parameter.

    soul :
          sync:
             nacos:
                  url: localhost:8848
                  namespace: 1c10d748-af86-43b9-8265-75f487d20c6c
                  acm:
                    enabled: false
                    endpoint: acm.aliyun.com
                    namespace:
                    accessKey:
                    secretKey: