title: Data Synchronization Config keywords: [“Data Synchronization”] description: use different data-sync strategy

This document focuses on how to use different data synchronization strategies. Data synchronization refers to the strategy used to synchronize data to ShenYu gateway after shenyu-admin background operation data. ShenYu gateway currently supports ZooKeeper, WebSocket, HTTP Long Polling, Nacos, Etcd and Consul for data synchronization.

For details about the data synchronization principles, see Data Synchronization Design in the design document.

WebSocket Synchronization Config（default strategy, recommend）

  • Apache ShenYu gateway config

    Add these dependencies in pom.xml：

    <!-- apache shenyu data sync start use websocket-->
    <dependency>
        <groupId>org.apache.shenyu</groupId>
        <artifactId>shenyu-spring-boot-starter-sync-data-websocket</artifactId>
        <version>${project.version}</version>
    </dependency>

Add these config values in yaml file:

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

  • shenyu-admin config

    Add these config values in yaml file:

shenyu:
  sync:
    websocket:
      enabled: true

After the connection is established, the data will be fully obtained once, and the subsequent data will be updated and added increments, with good performance. It also supports disconnection (default: 30 seconds). This mode is recommended for data synchronization and is the default data synchronization strategy of ShenYu.

Zookeeper Synchronization Config

Please pay attention! From ShenYu 2.5.0, ShenYu will no longer support Zookeeper 3.4.x or below version. If you're already using Zookeeper, You need to use Zookeeper with a higher version and initialize the data.

  • Apache ShenYu gateway config

    Add these dependencies in pom.xml：

       <!-- apache shenyu data sync start use zookeeper-->
       <dependency>
           <groupId>org.apache.shenyu</groupId>
           <artifactId>shenyu-spring-boot-starter-sync-data-zookeeper</artifactId>
           <version>${project.version}</version>
       </dependency>

Add these config values in yaml file:

shenyu:
  sync:
    zookeeper:
      url: localhost:2181
       #url: config with your zk address, used by the cluster environment, separated with (,).
      sessionTimeout: 5000
      connectionTimeout: 2000
  • shenyu-admin config

Add these config values in yaml file:

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

It is a good idea 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 Synchronization Config

  • Apache ShenYu gateway config

Add these dependencies in pom.xml：

        <!-- apache shenyu data sync start use http-->
        <dependency>
            <groupId>org.apache.shenyu</groupId>
            <artifactId>shenyu-spring-boot-starter-sync-data-http</artifactId>
            <version>${project.version}</version>
        </dependency>

Add these config values in yaml file:

shenyu:
    sync:
        http:
             url: http://localhost:9095
        #url: config your shenyu-admin  ip and port，cluster IP by split by (,)

  • shenyu-admin config

    Add these config values in yaml file:

shenyu:
  sync:
    http:
      enabled: true

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.

Nacos Synchronization Config

  • Apache ShenYu gateway config

Add these dependencies in pom.xml：

        <!-- apache shenyu data sync start use nacos-->
        <dependency>
            <groupId>org.apache.shenyu</groupId>
            <artifactId>shenyu-spring-boot-starter-sync-data-nacos</artifactId>
            <version>${project.version}</version>
        </dependency>

Add these config values in yaml file:

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

  • shenyu-admin config

    Add these config values in yaml file:

shenyu:
  sync:
      nacos:
        url: localhost:8848
        namespace: 1c10d748-af86-43b9-8265-75f487d20c6c
        username:
        password:
        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.

Etcd Synchronization Config

  • Apache ShenYu gateway config

    Add these dependencies in pom.xml：

        <!-- apache shenyu data sync start use etcd-->
        <dependency>
            <groupId>org.apache.shenyu</groupId>
            <artifactId>shenyu-spring-boot-starter-sync-data-etcd</artifactId>
            <version>${project.version}</version>
            <exclusions>
                <exclusion>
                    <groupId>io.grpc</groupId>
                    <artifactId>grpc-grpclb</artifactId>
                </exclusion>
                <exclusion>
                    <groupId>io.grpc</groupId>
                    <artifactId>grpc-netty</artifactId>
                </exclusion>
            </exclusions>
        </dependency>

Add these config values in yaml file:

shenyu:
    sync:
       etcd:
         url: http://localhost:2379
       #url: config with your etcd address, used by the cluster environment, separated with (,).

  • shenyu-admin config

    Add these config values in yaml file:

shenyu:
  sync:
    etcd:
      url: http://localhost:2379
       #url: config with your etcd address, used by the cluster environment, separated with (,).

Consul Synchronization Config

  • Apache ShenYu gateway config

Add these dependencies in pom.xml：

<!-- apache shenyu data sync start use consul-->
<dependency>
  <groupId>org.apache.shenyu</groupId>
  <artifactId>shenyu-spring-boot-starter-sync-data-consul</artifactId>
  <version>${project.version}</version>
</dependency>

Add these config values in yaml file:

shenyu:
    sync:
      consul:
				url: http://localhost:8500
        waitTime: 1000	# query wait time
        watchDelay: 1000	# Data synchronization interval

  • shenyu-admin config

    Add these config values in yaml file:

shenyu:
  sync:
    consul:
      url: http://localhost:8500

Apollo Synchronization Config

  • Apache ShenYu gateway config

Add these dependencies in pom.xml：

<!-- apache shenyu data sync start use consul-->
<dependency>
  <groupId>org.apache.shenyu</groupId>
  <artifactId>shenyu-spring-boot-starter-sync-data-apollo</artifactId>
  <version>${project.version}</version>
</dependency>

Add these config values in yaml file:

shenyu:
  sync:
    apollo:
      meta: http://localhost:8080
      appId: shenyu
      portalUrl: http://localhost:8070
      env: dev
      clusterName: test
      namespace: application
      token: 0fff5645fc74ee5e0d63a6389433c8c8afc0beea31eed0279ecc1c8961d12da9

After the data synchronization strategy of Apache ShenYu gateway and shenyu-admin is reconfigured, the microservice needs to be restarted.

the Apache ShenYu gateway and shenyu-admin must use the same synchronization strategy.