redis-scala链接redis集群

最新推荐文章于 2021-12-14 22:38:49 发布

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最新推荐文章于 2021-12-14 22:38:49 发布

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文章标签： scala 数据库大数据

本文介绍了一个使用Scala实现的Redis集群连接工具类，通过该工具可以方便地获取到Redis集群的连接，并提供了设置、获取及清空数据库的操作示例。代码中详细展示了如何创建Redis集群客户端，设置自动重连、连接前Ping以及定期刷新集群拓扑等选项。

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代码:

package com.wenbronk.sparkstreaming.scala.commons

import java.time.Duration

import io.lettuce.core.RedisURI
import io.lettuce.core.cluster.api.StatefulRedisClusterConnection
import io.lettuce.core.cluster.{ClusterClientOptions, ClusterTopologyRefreshOptions, RedisClusterClient}

import scala.collection.immutable


object RedisUtils {

  val ip = "10.110.122.172"
  val ports = Array(7000, 7001, 7002, 7003, 7004, 7005)

  def getRediceConnect: StatefulRedisClusterConnection[String, String] = {
    val uris: immutable.Seq[RedisURI] = ports.map(port => {
      RedisURI.builder().withHost(ip).withPort(port).build()
    }).toList
    import scala.collection.JavaConverters._
    val redisClusterClient = RedisClusterClient.create(uris.asJava)
    val topologyRefreshOptions = ClusterTopologyRefreshOptions.builder.enablePeriodicRefresh(Duration.ofMinutes(10)).enableAllAdaptiveRefreshTriggers.build
    redisClusterClient.setOptions(ClusterClientOptions.builder.autoReconnect(true).pingBeforeActivateConnection(true).topologyRefreshOptions(topologyRefreshOptions).build)
    redisClusterClient.connect()
  }


}

测试:

package com.wenbronk.sparkstreaming.test

import com.wenbronk.sparkstreaming.scala.commons.RedisUtils
import org.scalatest.FunSuite

class RedisTests extends FunSuite{

  test("redisSet") {
    val utils = RedisUtils
    val connect = utils.getRediceConnect
    connect.async().set("abc", "1234")
    println("hello")
  }

  test("redisGet") {
    val utils = RedisUtils
    val connect = utils.getRediceConnect
    val value = connect.async().get("abc")
    println(value.get())
  }

  test("flushdb") {
    val utils = RedisUtils
    val connect = utils.getRediceConnect
    val value = connect.async().flushdb()
    println(value.get())
  }


}

scala测试可见: