springboot中配置主从redis

测试redis的主从配置

redis实例

文件夹名称如下

redis_master_s
redis_slaver1_s
redis_slaver2_s

redis.conf文件

master的redis.conf文件(其余是默认设置)

port 6379
daemonize yes
# 这个文件夹要改成自己的目录
dir "/Users/vobile_lzl/redis_master_s"

slaver1的redis.conf文件

port 6378
# 主服务器端口为6379
slaveof 127.0.0.1 6379
dir "/Users/vobile_lzl/redis_slaver1_s"

slaver2的redis.conf文件

port 6377
# 主服务器端口为6379
slaveof 127.0.0.1 6379
dir "/Users/vobile_lzl/redis_slaver2_s"

这个主从服务器就配置好了。 
启动服务(命令大致如此)

./redis-server redis.conf

测试一下主从复制的功能 
1. 主服务器写入，从服务器可以读取到 
2. 从服务器不能写入

注意端口，6379表示主服务器，6377、6378是从服务器

127.0.0.1:6379> set name lzl
OK
127.0.0.1:6377> get name
"lzl"
127.0.0.1:6378> get name
"lzl"
# 从服务器不能写入
127.0.0.1:6378> set name lzl
(error) READONLY You can't write against a read only slave.
127.0.0.1:6377> set nam fdk
(error) READONLY You can't write against a read only slave.

sentinel.conf文件

sentinel是哨兵，用于监视主从服务器的运行状况，如果主服务器挂掉，会在从服务器中选举一个作为主服务器。 
配置文件如下 
master的sentinel.conf

port 26379
# 初次配置时的状态，这个sentinel会自动更新
sentinel monitor mymaster 127.0.0.1 6379 2
daemonize yes
logfile "./sentinel_log.log"

slaver1的sentinel.conf

port 26378
# 初次配置时的状态，这个sentinel会自动更新
sentinel monitor mymaster 127.0.0.1 6379 2
daemonize yes
logfile "./sentinel_log.log"

slaver2的sentinel.conf

port 26377
# 初次配置时的状态，这个sentinel会自动更新
sentinel monitor mymaster 127.0.0.1 6379 2
daemonize yes
logfile "./sentinel_log.log"

再次启动redis所有的服务端

./redis-server redis.conf
./redis-server sentinel.conf --sentinel

分别开启redis的客户端

./redis-cli
./redis-cli -h 127.0.0.1 -p 6378
./redis-cli -h 127.0.0.1 -p 6377

使用一下命令查看三个redis服务的状态

info replication

master 
role:master

127.0.0.1:6379> info replication
# Replication
role:master
connected_slaves:2
slave0:ip=127.0.0.1,port=6378,state=online,offset=4102,lag=1
slave1:ip=127.0.0.1,port=6377,state=online,offset=4102,lag=1
master_repl_offset:4102
repl_backlog_active:1
repl_backlog_size:1048576
repl_backlog_first_byte_offset:2
repl_backlog_histlen:4101

slaver1

127.0.0.1:6378> info replication
# Replication
role:slave
master_host:127.0.0.1
master_port:6379
master_link_status:up
master_last_io_seconds_ago:0
master_sync_in_progress:0
slave_repl_offset:15931
slave_priority:100
slave_read_only:1
connected_slaves:0
master_repl_offset:0
repl_backlog_active:0
repl_backlog_size:1048576
repl_backlog_first_byte_offset:0
repl_backlog_histlen:0

slaver2

127.0.0.1:6377> info replication
# Replication
role:slave
master_host:127.0.0.1
master_port:6379
master_link_status:up
master_last_io_seconds_ago:1
master_sync_in_progress:0
slave_repl_offset:21629
slave_priority:100
slave_read_only:1
connected_slaves:0
master_repl_offset:0
repl_backlog_active:0
repl_backlog_size:1048576
repl_backlog_first_byte_offset:0
repl_backlog_histlen:0

将master服务杀死

vobile-lzldeMacBook-Pro:~ vobile_lzl$ ps -ef | grep redis
  501 13258     1   0  9:52下午 ??         0:00.37 ./redis-server *:6379 

  kill -9 13258

再次查看master的状态 
说明master已经宕机

127.0.0.1:6379> info replication
Could not connect to Redis at 127.0.0.1:6379: Connection refused

再观察一段时间，6377的从服务器成为主服务器

127.0.0.1:6377> info replication
# Replication
role:master
connected_slaves:0
master_repl_offset:0
repl_backlog_active:0
repl_backlog_size:1048576
repl_backlog_first_byte_offset:0
repl_backlog_histlen:0

恢复主服务器，并设置为master

springboot中配置主从redis

 RedisCacheConfig

package com.config;

import com.fasterxml.jackson.annotation.JsonAutoDetect;
import com.fasterxml.jackson.annotation.PropertyAccessor;
import com.fasterxml.jackson.databind.ObjectMapper;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.cache.annotation.CachingConfigurerSupport;
import org.springframework.cache.annotation.EnableCaching;
import org.springframework.cache.interceptor.KeyGenerator;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.redis.cache.RedisCacheManager;
import org.springframework.data.redis.connection.RedisNode;
import org.springframework.data.redis.connection.RedisSentinelConfiguration;
import org.springframework.data.redis.connection.jedis.JedisConnectionFactory;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.serializer.Jackson2JsonRedisSerializer;
import org.springframework.data.redis.serializer.StringRedisSerializer;

import java.lang.reflect.Method;

/**
 * @author zhujinmin6
 */
@Configuration
@EnableAutoConfiguration
@EnableCaching //加上这个注解是的支持缓存注解
public class RedisCacheConfig extends CachingConfigurerSupport {

    @Value("${spring.redis.host}")
    private String host;

    @Value("${spring.redis.port}")
    private int port;

    @Value("${spring.redis.timeout}")
    private int timeout;

    @Value("${spring.redis.database}")
    private int database;

    @Value("${spring.redis.password}")
    private String password;

    @Value("${spring.redis.sentinel.nodes}")
    private String redisNodes;

    @Value("${spring.redis.sentinel.master}")
    private String master;


    /**
     * redis哨兵配置
     * @return
     */
    @Bean
    public RedisSentinelConfiguration redisSentinelConfiguration(){
        RedisSentinelConfiguration configuration = new RedisSentinelConfiguration();
        String[] host = redisNodes.split(",");
        for(String redisHost : host){
            String[] item = redisHost.split(":");
            String ip = item[0];
            String port = item[1];
            configuration.addSentinel(new RedisNode(ip, Integer.parseInt(port)));
        }
        configuration.setMaster(master);
        return configuration;
    }

    /**
     * 连接redis的工厂类
     *
     * @return
     */
    @Bean
    public JedisConnectionFactory jedisConnectionFactory() {
        JedisConnectionFactory factory = new JedisConnectionFactory(redisSentinelConfiguration());
        factory.setHostName(host);
        factory.setPort(port);
        factory.setTimeout(timeout);
        factory.setPassword(password);
        factory.setDatabase(database);
        return factory;
    }

    /**
     * 配置RedisTemplate
     * 设置添加序列化器
     * key 使用string序列化器
     * value 使用Json序列化器
     * 还有一种简答的设置方式，改变defaultSerializer对象的实现。
     *
     * @return
     */
    @Bean
    public RedisTemplate<Object, Object> redisTemplate() {
        //StringRedisTemplate的构造方法中默认设置了stringSerializer
        RedisTemplate<Object, Object> template = new RedisTemplate<>();
        //设置开启事务
        template.setEnableTransactionSupport(true);
        //set key serializer
        StringRedisSerializer stringRedisSerializer = new StringRedisSerializer();
        template.setKeySerializer(stringRedisSerializer);
        template.setHashKeySerializer(stringRedisSerializer);

        template.setConnectionFactory(jedisConnectionFactory());
        template.afterPropertiesSet();
        return template;
    }

    /**
     * 设置RedisCacheManager
     * 使用cache注解管理redis缓存
     *
     * @return
     */
    @Override
    @Bean
    public RedisCacheManager cacheManager() {
        RedisCacheManager redisCacheManager = new RedisCacheManager(redisTemplate());
        return redisCacheManager;
    }

    /**
     * 自定义生成redis-key
     *
     * @return
     */
    @Override
    public KeyGenerator keyGenerator() {
        return new KeyGenerator() {
            @Override
            public Object generate(Object o, Method method, Object... objects) {
                StringBuilder sb = new StringBuilder();
                sb.append(o.getClass().getName()).append(".");
                sb.append(method.getName()).append(".");
                for (Object obj : objects) {
                    sb.append(obj.toString());
                }
                System.out.println("keyGenerator=" + sb.toString());
                return sb.toString();
            }
        };
    }
}

SampleController

package com.controller;

import com.dao.UseRedisDao;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

/**
 * @author zhujinming6
 * @create 2017-10-24 9:25
 **/
@RestController
@RequestMapping("/sample")
public class SampleController {

    @Autowired
    private UseRedisDao useRedisDao;

    @RequestMapping("/hi")
    public String sayHello(String key,String value){
        useRedisDao.setValue(key,value);
        return useRedisDao.getValue(key);
    }
}

UseRedisDao

package com.dao;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.HashOperations;
import org.springframework.data.redis.core.ListOperations;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.core.ValueOperations;
import org.springframework.stereotype.Repository;

import javax.annotation.PostConstruct;
import java.util.Map;


/**
 * @Author: zhujinmin6
 * @Date: create in 15:44 17/9/21.
 * @description:整合redis的实例,简单了解RedisTemplate的API
 */
@Repository
public class UseRedisDao {

    @Autowired
    private RedisTemplate<Object,Object> redisTemplate;
    private ValueOperations<Object,Object> valueOperations;
    private ListOperations<Object,Object> listOperations;
    private HashOperations hashOperations;

    @PostConstruct
    public void getValueOperation(){
        valueOperations = redisTemplate.opsForValue();
        listOperations = redisTemplate.opsForList();
        hashOperations = redisTemplate.opsForHash();
    }

    public void setValue(String key, String value){
        valueOperations.set(key, value);
    }

    public String getValue(String key){
        return (String) valueOperations.get(key);
    }

    public void addList(String key, String value){
        listOperations.leftPush(key, value);
    }
    public Long getListSize(String key){
        return listOperations.size(key);
    }

    public void setHashMap(String key, Map map){
        hashOperations.putAll(key, map);
    }
    public Map getHashMap(String key){
        return hashOperations.entries(key);
    }
}

Application

package com;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.builder.SpringApplicationBuilder;
import org.springframework.boot.web.servlet.ServletComponentScan;
import org.springframework.boot.web.support.SpringBootServletInitializer;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.EnableAspectJAutoProxy;
import org.springframework.context.annotation.ImportResource;

/**
 * Web容器启动主类
 * @author zhujinmin6
 */
@SpringBootApplication(scanBasePackages = { "com" })
@EnableAutoConfiguration
@ServletComponentScan
public class Application extends  SpringBootServletInitializer {


    public static void main(String [] args){
        SpringApplication.run(Application.class,args);
    }


    @Override
    protected SpringApplicationBuilder configure(SpringApplicationBuilder application) {
        return application.sources(Application.class);
    }

}

pom.xml

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>redis_clu</groupId>
    <artifactId>redis_clu</artifactId>
    <version>1.0-SNAPSHOT</version>
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>1.4.3.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
        <java.version>1.8</java.version>
    </properties>
    <dependencies>
        
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-thymeleaf</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>org.thymeleaf.extras</groupId>
            <artifactId>thymeleaf-extras-springsecurity4</artifactId>
        </dependency>
        <!-- spring boot and redis-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-redis</artifactId>
            <version>1.5.7.RELEASE</version>
        </dependency>
    </dependencies>
    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>
</project>

application.properties

#springSession u9009u62E9u540Cu6B65sessionu7684u5916u90E8u7F13u5B58
#spring.session.store-type=redis

#========================redis u914Du7F6E=============================
# Redisu6570u636Eu5E93u7D22u5F15uFF08u9ED8u8BA4u4E3A0uFF09,u5982u679Cu8BBEu7F6Eu4E3A1uFF0Cu90A3u4E48u5B58u5165u7684key-valueu90FDu5B58u653Eu5728select 1u4E2D
spring.redis.database=0 
# Redisu670Du52A1u5668u5730u5740
spring.redis.host=localhost
# Redisu670Du52A1u5668u8FDEu63A5u7AEFu53E3
spring.redis.port=6379 
# Redisu670Du52A1u5668u8FDEu63A5u5BC6u7801uFF08u9ED8u8BA4u4E3Au7A7AuFF09
spring.redis.password=
#u8FDEu63A5u6C60u6700u5927u8FDEu63A5u6570uFF08u4F7Fu7528u8D1Fu503Cu8868u793Au6CA1u6709u9650u5236uFF09
spring.redis.pool.max-active=8 
# u8FDEu63A5u6C60u6700u5927u963Bu585Eu7B49u5F85u65F6u95F4uFF08u4F7Fu7528u8D1Fu503Cu8868u793Au6CA1u6709u9650u5236uFF09
spring.redis.pool.max-wait=-1 
# u8FDEu63A5u6C60u4E2Du7684u6700u5927u7A7Au95F2u8FDEu63A5
spring.redis.pool.max-idle=8 
# u8FDEu63A5u6C60u4E2Du7684u6700u5C0Fu7A7Au95F2u8FDEu63A5
spring.redis.pool.min-idle=0 
# u8FDEu63A5u8D85u65F6u65F6u95F4uFF08u6BEBu79D2uFF09
spring.redis.timeout=0
### u4E3Bu4ECEu914Du7F6E
# name of Redis server  u54E8u5175u76D1u542Cu7684Redis serveru7684u540Du79F0
spring.redis.sentinel.master=mymaster
# comma-separated list of host:port pairs  u54E8u5175u7684u914Du7F6Eu5217u8868
spring.redis.sentinel.nodes=127.0.0.1:26379,127.0.0.1:26378,127.0.0.1:26377

启动成功

调用redis

结果

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