在pom.xml引入redis的依赖和cache的依赖

     <!--        引入redis的依赖-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-redis</artifactId>
        </dependency>
        <!--        引入缓存,用于做spring的缓存，可以这样认为，redis是实际保存缓存数据的NoSQL数据库；；Cache是Spring Boot和Redis打交道的缓存组件-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-cache</artifactId>
        </dependency>

在appilication.proporties中配置host、port、password

# 配置redis的信息,ip port password,在application中打开spring的缓存
spring.redis.host=192.168.109.128
spring.redis.port=6379
spring.redis.password=123456

在Application.java启动文件开启@EnanbleCache

//开启spring的缓存.我们希望使用缓存的ServiceImpl方法上，使用【@Cacheable(value = "***")】注解：缓存该方法的返回值；
@EnableCaching

在serviceImpl层开启redis注解，

@Cacheable(value=”listCategoryForCustomer”)，这个注释的意思是，当调用这个方法的时候，会从一个名叫 listCategoryForCustomer的缓存中查询，如果没有，则执行实际的方法（即查询数据库），并将执行的结果存入缓存中，否则返回缓存中的对象。

@Override
//开启redis缓存数据，
//使用的key就是方法名，value就是返回值。调用方法时先尝试查看redis中是否有数据。
    @Cacheable(value = "listCategoryForCustomer")
    public List<CategoryVO> listCategoryForCustomer() {
        ArrayList<CategoryVO> categoryVOList = new ArrayList<>();

        recursivelyFindCategories(categoryVOList, 0);
        return categoryVOList;
    }

配置redis

import org.springframework.cache.annotation.EnableCaching;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.redis.cache.RedisCacheConfiguration;
import org.springframework.data.redis.cache.RedisCacheManager;
import org.springframework.data.redis.cache.RedisCacheWriter;
import org.springframework.data.redis.connection.RedisConnectionFactory;

import java.time.Duration;

/**
 * 描述：redis缓存的配置类
 */
@Configuration
@EnableCaching
public class CachingConfig {

    @Bean
    public RedisCacheManager redisCacheManager(RedisConnectionFactory connectionFactory) {
        RedisCacheWriter redisCacheWriter = RedisCacheWriter.lockingRedisCacheWriter(connectionFactory);
        RedisCacheConfiguration cacheConfiguration = RedisCacheConfiguration.defaultCacheConfig();
        cacheConfiguration = cacheConfiguration.entryTtl(Duration.ofSeconds(30));

        RedisCacheManager redisCacheManager = new RedisCacheManager(redisCacheWriter, cacheConfiguration);
        return redisCacheManager;
    }

}

启动项目，postman发送数据，

发现redis连接超时。Caused by: io.netty.channel.ConnectTimeoutException: connection timed out: /192.168.109.128:6379

[16:20:29.662] [ERROR] [http-nio-8000-exec-2] com.zhang.imall.exception.GlobalExceptionHandler - default exception
org.springframework.data.redis.RedisConnectionFailureException: Unable to connect to Redis; nested exception is io.lettuce.core.RedisConnectionException: Unable to connect to 192.168.109.128:6379
	at org.springframework.data.redis.connection.lettuce.LettuceConnectionFactory$SharedConnection.getNativeConnection(LettuceConnectionFactory.java:1200) ~[spring-data-redis-2.2.1.RELEASE.jar:2.2.1.RELEASE]
	at org.springframework.data.redis.connection.lettuce.LettuceConnectionFactory$SharedConnection.getConnection(LettuceConnectionFactory.java:1179) ~[spring-data-redis-2.2.1.RELEASE.jar:2.2.1.RELEASE]
	at org.springframework.data.redis.connection.lettuce.LettuceConnectionFactory.getSharedConnection(LettuceConnectionFactory.java:942) ~[spring-data-redis-2.2.1.RELEASE.jar:2.2.1.RELEASE]
	at org.springframework.data.redis.connection.lettuce.LettuceConnectionFactory.getConnection(LettuceConnectionFactory.java:353) ~[spring-data-redis-2.2.1.RELEASE.jar:2.2.1.RELEASE]
	at org.springframework.data.redis.cache.DefaultRedisCacheWriter.execute(DefaultRedisCacheWriter.java:238) ~[spring-data-redis-2.2.1.RELEASE.jar:2.2.1.RELEASE]
	at org.springframework.data.redis.cache.DefaultRedisCacheWriter.get(DefaultRedisCacheWriter.java:109) ~[spring-data-redis-2.2.1.RELEASE.jar:2.2.1.RELEASE]
	at org.springframework.data.redis.cache.RedisCache.lookup(RedisCache.java:88) ~[spring-data-redis-2.2.1.RELEASE.jar:2.2.1.RELEASE]
	at org.springframework.cache.support.AbstractValueAdaptingCache.get(AbstractValueAdaptingCache.java:58) ~[spring-context-5.2.1.RELEASE.jar:5.2.1.RELEASE]
	at org.springframework.cache.interceptor.AbstractCacheInvoker.doGet(AbstractCacheInvoker.java:73) ~[spring-context-5.2.1.RELEASE.jar:5.2.1.RELEASE]
	at org.springframework.cache.interceptor.CacheAspectSupport.findInCaches(CacheAspectSupport.java:554) ~[spring-context-5.2.1.RELEASE.jar:5.2.1.RELEASE]
	at org.springframework.cache.interceptor.CacheAspectSupport.findCachedItem(CacheAspectSupport.java:519) ~[spring-context-5.2.1.RELEASE.jar:5.2.1.RELEASE]
	at org.springframework.cache.interceptor.CacheAspectSupport.execute(CacheAspectSupport.java:401) ~[spring-context-5.2.1.RELEASE.jar:5.2.1.RELEASE]
	at org.springframework.cache.interceptor.CacheAspectSupport.execute(CacheAspectSupport.java:345) ~[spring-context-5.2.1.RELEASE.jar:5.2.1.RELEASE]
	at org.springframework.cache.interceptor.CacheInterceptor.invoke(CacheInterceptor.java:61) ~[spring-context-5.2.1.RELEASE.jar:5.2.1.RELEASE]
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186) ~[spring-aop-5.2.1.RELEASE.jar:5.2.1.RELEASE]
	at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.proceed(CglibAopProxy.java:747) ~[spring-aop-5.2.1.RELEASE.jar:5.2.1.RELEASE]
	at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:689) ~[spring-aop-5.2.1.RELEASE.jar:5.2.1.RELEASE]
	at com.zhang.imall.service.impl.CategoryServiceImpl$$EnhancerBySpringCGLIB$$b1142b20.listCategoryForCustomer(<generated>) ~[classes/:?]
	at com.zhang.imall.controller.CategoryController.listCategoryForCustomer(CategoryController.java:138) ~[classes/:?]
	at com.zhang.imall.controller.CategoryController$$FastClassBySpringCGLIB$$3a61d58c.invoke(<generated>) ~[classes/:?]
	at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:218) ~[spring-core-5.2.1.RELEASE.jar:5.2.1.RELEASE]
	at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.invokeJoinpoint(CglibAopProxy.java:769) ~[spring-aop-5.2.1.RELEASE.jar:5.2.1.RELEASE]
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:163) ~[spring-aop-5.2.1.RELEASE.jar:5.2.1.RELEASE]
	at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.proceed(CglibAopProxy.java:747) ~[spring-aop-5.2.1.RELEASE.jar:5.2.1.RELEASE]
	at org.springframework.aop.framework.adapter.MethodBeforeAdviceInterceptor.invoke(MethodBeforeAdviceInterceptor.java:56) ~[spring-aop-5.2.1.RELEASE.jar:5.2.1.RELEASE]
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186) ~[spring-aop-5.2.1.RELEASE.jar:5.2.1.RELEASE]
	at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.proceed(CglibAopProxy.java:747) ~[spring-aop-5.2.1.RELEASE.jar:5.2.1.RELEASE]
	at org.springframework.aop.framework.adapter.AfterReturningAdviceInterceptor.invoke(AfterReturningAdviceInterceptor.java:55) ~[spring-aop-5.2.1.RELEASE.jar:5.2.1.RELEASE]
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186) ~[spring-aop-5.2.1.RELEASE.jar:5.2.1.RELEASE]
	at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.proceed(CglibAopProxy.java:747) ~[spring-aop-5.2.1.RELEASE.jar:5.2.1.RELEASE]
	at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:93) ~[spring-aop-5.2.1.RELEASE.jar:5.2.1.RELEASE]
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186) ~[spring-aop-5.2.1.RELEASE.jar:5.2.1.RELEASE]
	at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.proceed(CglibAopProxy.java:747) ~[spring-aop-5.2.1.RELEASE.jar:5.2.1.RELEASE]
	at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:689) ~[spring-aop-5.2.1.RELEASE.jar:5.2.1.RELEASE]
	at com.zhang.imall.controller.CategoryController$$EnhancerBySpringCGLIB$$2867e75a.listCategoryForCustomer(<generated>) ~[classes/:?]
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_341]
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_341]
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_341]
	at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_341]
	at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:190) ~[spring-web-5.2.1.RELEASE.jar:5.2.1.RELEASE]
	at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:138) ~[spring-web-5.2.1.RELEASE.jar:5.2.1.RELEASE]
	at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:106) ~[spring-webmvc-5.2.1.RELEASE.jar:5.2.1.RELEASE]
	at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:888) ~[spring-webmvc-5.2.1.RELEASE.jar:5.2.1.RELEASE]
	at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:793) ~[spring-webmvc-5.2.1.RELEASE.jar:5.2.1.RELEASE]
	at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:87) ~[spring-webmvc-5.2.1.RELEASE.jar:5.2.1.RELEASE]
	at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1040) [spring-webmvc-5.2.1.RELEASE.jar:5.2.1.RELEASE]
	at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:943) [spring-webmvc-5.2.1.RELEASE.jar:5.2.1.RELEASE]
	at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1006) [spring-webmvc-5.2.1.RELEASE.jar:5.2.1.RELEASE]
	at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:898) [spring-webmvc-5.2.1.RELEASE.jar:5.2.1.RELEASE]
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:634) [tomcat-embed-core-9.0.27.jar:9.0.27]
	at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:883) [spring-webmvc-5.2.1.RELEASE.jar:5.2.1.RELEASE]
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:741) [tomcat-embed-core-9.0.27.jar:9.0.27]
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231) [tomcat-embed-core-9.0.27.jar:9.0.27]
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [tomcat-embed-core-9.0.27.jar:9.0.27]
	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53) [tomcat-embed-websocket-9.0.27.jar:9.0.27]
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) [tomcat-embed-core-9.0.27.jar:9.0.27]
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [tomcat-embed-core-9.0.27.jar:9.0.27]
	at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:100) [spring-web-5.2.1.RELEASE.jar:5.2.1.RELEASE]
	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) [spring-web-5.2.1.RELEASE.jar:5.2.1.RELEASE]
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) [tomcat-embed-core-9.0.27.jar:9.0.27]
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [tomcat-embed-core-9.0.27.jar:9.0.27]
	at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:93) [spring-web-5.2.1.RELEASE.jar:5.2.1.RELEASE]
	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) [spring-web-5.2.1.RELEASE.jar:5.2.1.RELEASE]
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) [tomcat-embed-core-9.0.27.jar:9.0.27]
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [tomcat-embed-core-9.0.27.jar:9.0.27]
	at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201) [spring-web-5.2.1.RELEASE.jar:5.2.1.RELEASE]
	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) [spring-web-5.2.1.RELEASE.jar:5.2.1.RELEASE]
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) [tomcat-embed-core-9.0.27.jar:9.0.27]
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [tomcat-embed-core-9.0.27.jar:9.0.27]
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:202) [tomcat-embed-core-9.0.27.jar:9.0.27]
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96) [tomcat-embed-core-9.0.27.jar:9.0.27]
	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:526) [tomcat-embed-core-9.0.27.jar:9.0.27]
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:139) [tomcat-embed-core-9.0.27.jar:9.0.27]
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) [tomcat-embed-core-9.0.27.jar:9.0.27]
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74) [tomcat-embed-core-9.0.27.jar:9.0.27]
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343) [tomcat-embed-core-9.0.27.jar:9.0.27]
	at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:408) [tomcat-embed-core-9.0.27.jar:9.0.27]
	at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66) [tomcat-embed-core-9.0.27.jar:9.0.27]
	at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:861) [tomcat-embed-core-9.0.27.jar:9.0.27]
	at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1579) [tomcat-embed-core-9.0.27.jar:9.0.27]
	at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) [tomcat-embed-core-9.0.27.jar:9.0.27]
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) [?:1.8.0_341]
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) [?:1.8.0_341]
	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) [tomcat-embed-core-9.0.27.jar:9.0.27]
	at java.lang.Thread.run(Thread.java:750) [?:1.8.0_341]
Caused by: io.lettuce.core.RedisConnectionException: Unable to connect to 192.168.109.128:6379
	at io.lettuce.core.RedisConnectionException.create(RedisConnectionException.java:78) ~[lettuce-core-5.2.1.RELEASE.jar:5.2.1.RELEASE]
	at io.lettuce.core.RedisConnectionException.create(RedisConnectionException.java:56) ~[lettuce-core-5.2.1.RELEASE.jar:5.2.1.RELEASE]
	at io.lettuce.core.AbstractRedisClient.getConnection(AbstractRedisClient.java:234) ~[lettuce-core-5.2.1.RELEASE.jar:5.2.1.RELEASE]
	at io.lettuce.core.RedisClient.connect(RedisClient.java:207) ~[lettuce-core-5.2.1.RELEASE.jar:5.2.1.RELEASE]
	at org.springframework.data.redis.connection.lettuce.StandaloneConnectionProvider.lambda$getConnection$1(StandaloneConnectionProvider.java:115) ~[spring-data-redis-2.2.1.RELEASE.jar:2.2.1.RELEASE]
	at java.util.Optional.orElseGet(Optional.java:267) ~[?:1.8.0_341]
	at org.springframework.data.redis.connection.lettuce.StandaloneConnectionProvider.getConnection(StandaloneConnectionProvider.java:115) ~[spring-data-redis-2.2.1.RELEASE.jar:2.2.1.RELEASE]
	at org.springframework.data.redis.connection.lettuce.LettuceConnectionFactory$SharedConnection.getNativeConnection(LettuceConnectionFactory.java:1198) ~[spring-data-redis-2.2.1.RELEASE.jar:2.2.1.RELEASE]
	... 84 more
Caused by: io.netty.channel.ConnectTimeoutException: connection timed out: /192.168.109.128:6379
	at io.netty.channel.nio.AbstractNioChannel$AbstractNioUnsafe$1.run(AbstractNioChannel.java:261) ~[netty-transport-4.1.43.Final.jar:4.1.43.Final]
	at io.netty.util.concurrent.PromiseTask.runTask(PromiseTask.java:98) ~[netty-common-4.1.43.Final.jar:4.1.43.Final]
	at io.netty.util.concurrent.ScheduledFutureTask.run(ScheduledFutureTask.java:150) ~[netty-common-4.1.43.Final.jar:4.1.43.Final]
	at io.netty.util.concurrent.AbstractEventExecutor.safeExecute(AbstractEventExecutor.java:163) ~[netty-common-4.1.43.Final.jar:4.1.43.Final]
	at io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:510) ~[netty-common-4.1.43.Final.jar:4.1.43.Final]
	at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:518) ~[netty-transport-4.1.43.Final.jar:4.1.43.Final]
	at io.netty.util.concurrent.SingleThreadEventExecutor$6.run(SingleThreadEventExecutor.java:1050) ~[netty-common-4.1.43.Final.jar:4.1.43.Final]
	at io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74) ~[netty-common-4.1.43.Final.jar:4.1.43.Final]
	at io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30) ~[netty-common-4.1.43.Final.jar:4.1.43.Final]
	... 1 more

原因：Linux防火墙没有放行端口

外部访问redis的前提是把redis配置文件中的 protected-mode yes,改为 protected-mode no 这样redis才允许外部访问。
查看Linux防火墙状态命令：

 systemctl status firewalld.service
# running 是防火墙正在运行

在/usr/local 新建目录redis  ,下载redis然后Redis入门二：Linux系统下安装Redis；_小枯林的博客-CSDN博客

Redis操作相关命令：查看、停止、启动_普通网友的博客-CSDN博客_查看redis是否启动

1.排查防火墙是否开启redis的端口

开启放行：Redis端口  redis默认端口6379

firewall-cmd --zone=public --add-port=6379/tcp --permanent

重启防火墙，查看开放端口

systemctl restart firewalld.service


查看端口：看到6379/tcp，说明端口已经成功开放。

firewall-cmd --list-ports

2. 修改Redis的配置文件
不记得文件位置，可以用find命令找到redis.conf配置文件，可以先copy个副本，万一会用上呢

find / -name redis.conf

然后利用vi或vim进行编辑

vi redis.conf
一些会用到的快捷键或命令

上一页(forward)：Ctrl键+F

下一页(backforward)：Ctrl键+B

进入编辑模式：Insert键

文本快速定位，命令行输入：/+文本内容
「/关键字」：先按「/」键，再输入您想寻找的字符，如果第一次找的关键字不是您想要的，可以一直按「n」会往后寻找到您要的关键字为止。

　「?关键字」：先按「?」键，再输入您想寻找的字符，如果第一次找的关键字不是您想要的，可以一直按「n」会往前寻找到您要的关键字为止。

退出编辑模式，进入命令行模式：Esc键

保存并退出，命令行输入：:wq

: wq (输入「wq」，存盘并退出vi)

: q! (输入q!， 不存盘强制退出vi)

2.1 redis默认本地访问，可以吧bind 127.0.0.1注释掉，或者把127.0.0.1改为0.0.0.0

    我是把127.0.0.1改为0.0.0.0

 # bind 127.0.0.1

2.2 redis保护模式默认开启，把yes改成no，关掉保护模式

protected-mode no

2.3  redis默认前台开启，来都来了，这不把它改了，no变yes，后台运行

daemonize yes

2.4 重启redis
重中之重，修改配置文件，别忘了重启！！！

修改配置文件，别忘了重启！！！

在redis目录去正常关闭redis服务；

./src/redis-cli shutdown
./src/redis-cli -p 6379 shutdown
# 使用下面的命令关闭redis没有报错信息
./src/redis-cli -a 12345 -p 6379 shutdown 2>/dev/null

重启

./src/redis-server redis.conf
#开启客户端
./src/redis-cli -p 6379

查看：netstat -tulpn


./src/redis-cli
输入auth 123456
ping 会恢复pang

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linux部署redis及设置开机自启_redis_dl_linlon-DevPress官方社区

 
  

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        # 缓存
      
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