redis java 客户端服务器最佳实践

你的名字 2022-05-20 00:25 344阅读 0赞

本文带大家入门市场上最佳的redis实践方案，redisson+codis。

一、为什么要使用redisson

这里介绍的是redis客户端方面的。

对于java客户端，现在市面上有jedis，jedis是redis官方推荐的，支持redisCluster、shardJedis、redis sentinel等多种功能。功能比较齐全。虽然都支持，但是redisCluster、redis sentinel都有各自的缺点，下面会介绍，那么支持也没有。shardjedis也是有缺点，因为每次增加减少或者修改redis服务器的ip，shardjedis都需要改变ip，这个是很麻烦的事情，下面也会介绍。

真正需要使用redisson的原因如下：[参考][Link 1]

jedis使用阻塞的I/O，且其方法调用都是同步的，程序需要等到sockets处理完I/O才能执行，不支持异步。jedis客户端实例不是线程安全的，所以需要通过连接池来使用jedis；redisson使用非阻塞的I/O和基于netty的时间驱动的通讯层，其方法调用是异步的。Redisson的API是线程安全的，所以可以操作单个redission连接来完成各种操作。

所以，当数据量上来了之后，redisson的优点就体现出来了。

但是redisson也不能解决的一个问题就是服务器ip增加减少或者修改客户端都需要重新配置，解决的办法就是用下面的代理codis。

二、为什么要使用codis

这里介绍的是redis服务端方面的。

首先我们分析市面上几款产品：

redis sentinel：redis官方高可用的实现方案，数据量起来了之后，数据放在单台机器上会遇到容量和qps的瓶颈。redis sentinel只能实现高可用，不能实现不同的数据分布在不同的机器上。

redis cluster：redis官方集群实现方案，把槽slot分配给各个机器，数据再放到各个槽里面。可以实现分布式，每台单独的机器可以配置一个从节点，可以实现高可用。但是如果机器的ip和端口改变了，客户端的代码或者配置是需要修改的，在实际生产环境中使用会很苦恼。

shardjedis：这个其实属于的是客户端方面。但是因为它实现了hash一致性算法，并且使用了虚拟节点解决了节点分配不均的问题，这种一般是服务端解决的，所以放这里。并且添加或者减少节点的时候，只影响相邻的节点，这种用一致性hash实现的方法可以说是很优秀了，但是出现的问题和redis cluster 问题一样，如果机器的ip和端口改变了，需要修改配置。并且客户端分片，有多个客户端，容易造成数据的错误。

cachecloud：[cachecloud][]是搜狐tv开发的，作为redis客户端服务器解决方案其实是不错的，服务端提供一个应用id，客户端连接这个id就可以。服务端修改ip和端口或者迁移数据对客户端都是透明的，客户端只要连接那个id就可以，所以可以解决我们遇到的所有问题。但是，使用这个方案总感觉有点跟不上主流，因为主流都用redisson或者jedis，客户端需要自己上传一个jar包到maven上面，然后在项目里面使用，如果这个使用熟悉了，就失去使用别的主流框架的机会，不过这个东西还是很好用。

Twemproxy：[github地址][github]，说实话，这个东西也是很常用的redisproxy方案，而且twitter开发的，必出精品，但是正如codis的git界面所展示的，codis是更加优秀：

![70][]

twemproxy最大的缺点就是，reshard（迁移槽数据）之后，需要重启集群，这也是很难接受的；另外也没有图形界面。

哈哈哈，我们还是支持豌豆荚国产牌子吧

codis：这个就是[codis][]，

[参考][Link 2]

codis解决了如下问题：

通过1024个槽进行rehash从而可以平滑扩容缩容、避免单点故障和单点性能不足（高可用）、有图形界面、服务端操作对客户端透明、可以轻松将twemproxy迁移到codis。

codis唯一的瑕疵是 需要更改redis的源代码(为了加入slot信息)，所以codis启动的是codis-server而不是redis-server

阿里的redis集群解决方案：阿里云，或者别的云，一般都有redis的集群解决方案，如果有钱并且对安全性要求不是特别特别高（需要使用自己的机房），直接用他们的解决方案就行了。

总结起来，如果数据量不大，直接使用redis-sentinel或者客户端分片的sharding jedis都可以了。但是要实现大规模数据，同时保证安全性（需要有自己的机房）又要便宜那就用redisson+codis。

三、如何使用redisson

1、先写一个redissonManager

<table style="border-spacing:0px;color:rgb(36,41,46);font-family:'-apple-system', BlinkMacSystemFont, 'Segoe UI', Helvetica, Arial, sans-serif, 'Apple Color Emoji', 'Segoe UI Emoji', 'Segoe UI Symbol';font-size:14px;background-color:rgb(255,255,255);"> 
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 <td style="line-height:20px;vertical-align:top;font-family:'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, Courier, monospace;font-size:12px;color:rgb(36,41,46);">public class RedissonManager { </td> 
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 <td style="line-height:20px;vertical-align:top;font-family:'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, Courier, monospace;font-size:12px;color:rgb(36,41,46);">private Config config = new Config();</td> 
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 <td style="line-height:20px;vertical-align:top;font-family:'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, Courier, monospace;font-size:12px;color:rgb(36,41,46);">&nbsp;</td> 
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 <td style="line-height:20px;vertical-align:top;font-family:'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, Courier, monospace;font-size:12px;color:rgb(36,41,46);">private Redisson redisson = null;</td> 
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 <td style="line-height:20px;vertical-align:top;font-family:'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, Courier, monospace;font-size:12px;color:rgb(36,41,46);">&nbsp;</td> 
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 <td style="line-height:20px;vertical-align:top;font-family:'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, Courier, monospace;font-size:12px;color:rgb(36,41,46);">public Redisson getRedisson() { </td> 
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 <td style="line-height:20px;vertical-align:top;font-family:'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, Courier, monospace;font-size:12px;color:rgb(36,41,46);">return redisson;</td> 
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 <td style="line-height:20px;vertical-align:top;font-family:'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, Courier, monospace;font-size:12px;color:rgb(36,41,46);">}</td> 
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 <td style="line-height:20px;vertical-align:top;font-family:'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, Courier, monospace;font-size:12px;color:rgb(36,41,46);">&nbsp;</td> 
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 <td style="line-height:20px;vertical-align:top;font-family:'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, Courier, monospace;font-size:12px;color:rgb(36,41,46);">private static String redis1Ip = PropertiesUtil.getProperty("redis1.ip");</td> 
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 <td style="width:50px;min-width:50px;font-family:'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, Courier, monospace;font-size:12px;line-height:20px;color:rgba(27,31,35,.3);text-align:right;vertical-align:top;">&nbsp;</td> 
 <td style="line-height:20px;vertical-align:top;font-family:'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, Courier, monospace;font-size:12px;color:rgb(36,41,46);">private static Integer redis1Port = Integer.parseInt(PropertiesUtil.getProperty("redis1.port"));</td> 
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 <td style="width:50px;min-width:50px;font-family:'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, Courier, monospace;font-size:12px;line-height:20px;color:rgba(27,31,35,.3);text-align:right;vertical-align:top;">&nbsp;</td> 
 <td style="line-height:20px;vertical-align:top;font-family:'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, Courier, monospace;font-size:12px;color:rgb(36,41,46);">private static String redis2Ip = PropertiesUtil.getProperty("redis2.ip");</td> 
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 <td style="width:50px;min-width:50px;font-family:'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, Courier, monospace;font-size:12px;line-height:20px;color:rgba(27,31,35,.3);text-align:right;vertical-align:top;">&nbsp;</td> 
 <td style="line-height:20px;vertical-align:top;font-family:'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, Courier, monospace;font-size:12px;color:rgb(36,41,46);">private static Integer redis2Port = Integer.parseInt(PropertiesUtil.getProperty("redis2.port"));</td> 
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 <td style="line-height:20px;vertical-align:top;font-family:'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, Courier, monospace;font-size:12px;color:rgb(36,41,46);">&nbsp;</td> 
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 <td style="line-height:20px;vertical-align:top;font-family:'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, Courier, monospace;font-size:12px;color:rgb(36,41,46);">@PostConstruct</td> 
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 <td style="line-height:20px;vertical-align:top;font-family:'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, Courier, monospace;font-size:12px;color:rgb(36,41,46);">private void init(){ </td> 
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 <td style="line-height:20px;vertical-align:top;font-family:'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, Courier, monospace;font-size:12px;color:rgb(36,41,46);">try { </td> 
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 <td style="line-height:20px;vertical-align:top;font-family:'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, Courier, monospace;font-size:12px;color:rgb(36,41,46);">config.useSingleServer().setAddress(new StringBuilder().append(redis1Ip).append(":").append(redis1Port).toString());</td> 
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 <td style="width:50px;min-width:50px;font-family:'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, Courier, monospace;font-size:12px;line-height:20px;color:rgba(27,31,35,.3);text-align:right;vertical-align:top;">&nbsp;</td> 
 <td style="line-height:20px;vertical-align:top;font-family:'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, Courier, monospace;font-size:12px;color:rgb(36,41,46);">&nbsp;</td> 
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 <td style="line-height:20px;vertical-align:top;font-family:'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, Courier, monospace;font-size:12px;color:rgb(36,41,46);">redisson = (Redisson) Redisson.create(config);</td> 
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 <td style="line-height:20px;vertical-align:top;font-family:'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, Courier, monospace;font-size:12px;color:rgb(36,41,46);">&nbsp;</td> 
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 <td style="width:50px;min-width:50px;font-family:'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, Courier, monospace;font-size:12px;line-height:20px;color:rgba(27,31,35,.3);text-align:right;vertical-align:top;">&nbsp;</td> 
 <td style="line-height:20px;vertical-align:top;font-family:'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, Courier, monospace;font-size:12px;color:rgb(36,41,46);">log.info("初始化Redisson结束");</td> 
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 <td style="width:50px;min-width:50px;font-family:'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, Courier, monospace;font-size:12px;line-height:20px;color:rgba(27,31,35,.3);text-align:right;vertical-align:top;">&nbsp;</td> 
 <td style="line-height:20px;vertical-align:top;font-family:'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, Courier, monospace;font-size:12px;color:rgb(36,41,46);">} catch (Exception e) { </td> 
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 <td style="line-height:20px;vertical-align:top;font-family:'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, Courier, monospace;font-size:12px;color:rgb(36,41,46);">log.error("redisson init error",e);</td> 
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 <td style="line-height:20px;vertical-align:top;font-family:'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, Courier, monospace;font-size:12px;color:rgb(36,41,46);">}</td> 
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 <td style="width:50px;min-width:50px;font-family:'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, Courier, monospace;font-size:12px;line-height:20px;color:rgba(27,31,35,.3);text-align:right;vertical-align:top;">&nbsp;</td> 
 <td style="line-height:20px;vertical-align:top;font-family:'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, Courier, monospace;font-size:12px;color:rgb(36,41,46);">}</td> 
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 </tbody> 
</table>

把要使用的配置加入，如果有两个ip，可以加入两个

然后，这个就是使用方法：

<table style="border-spacing:0px;color:rgb(36,41,46);font-family:'-apple-system', BlinkMacSystemFont, 'Segoe UI', Helvetica, Arial, sans-serif, 'Apple Color Emoji', 'Segoe UI Emoji', 'Segoe UI Symbol';font-size:14px;background-color:rgb(255,255,255);"> 
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 <td style="width:50px;min-width:50px;font-family:'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, Courier, monospace;font-size:12px;line-height:20px;color:rgba(27,31,35,.3);text-align:right;vertical-align:top;">&nbsp;</td> 
 <td style="line-height:20px;vertical-align:top;font-family:'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, Courier, monospace;font-size:12px;color:rgb(36,41,46);">public class RedissonTest { </td> 
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 <td style="line-height:20px;vertical-align:top;font-family:'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, Courier, monospace;font-size:12px;color:rgb(36,41,46);">private static final String CLOSE_ORDER_TASK_LOCK= "LOOK";</td> 
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 <td style="width:50px;min-width:50px;font-family:'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, Courier, monospace;font-size:12px;line-height:20px;color:rgba(27,31,35,.3);text-align:right;vertical-align:top;">&nbsp;</td> 
 <td style="line-height:20px;vertical-align:top;font-family:'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, Courier, monospace;font-size:12px;color:rgb(36,41,46);">public static void main(String[] args) { </td> 
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 <td style="line-height:20px;vertical-align:top;font-family:'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, Courier, monospace;font-size:12px;color:rgb(36,41,46);">RedissonManager redissonManager = new RedissonManager();</td> 
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 <td style="width:50px;min-width:50px;font-family:'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, Courier, monospace;font-size:12px;line-height:20px;color:rgba(27,31,35,.3);text-align:right;vertical-align:top;">&nbsp;</td> 
 <td style="line-height:20px;vertical-align:top;font-family:'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, Courier, monospace;font-size:12px;color:rgb(36,41,46);">RLock lock = redissonManager.getRedisson().getLock(CLOSE_ORDER_TASK_LOCK);</td> 
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 <td style="width:50px;min-width:50px;font-family:'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, Courier, monospace;font-size:12px;line-height:20px;color:rgba(27,31,35,.3);text-align:right;vertical-align:top;">&nbsp;</td> 
 <td style="line-height:20px;vertical-align:top;font-family:'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, Courier, monospace;font-size:12px;color:rgb(36,41,46);">boolean getLock = false;</td> 
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 <td style="width:50px;min-width:50px;font-family:'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, Courier, monospace;font-size:12px;line-height:20px;color:rgba(27,31,35,.3);text-align:right;vertical-align:top;">&nbsp;</td> 
 <td style="line-height:20px;vertical-align:top;font-family:'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, Courier, monospace;font-size:12px;color:rgb(36,41,46);">try { </td> 
 </tr> 
 <tr> 
 <td style="width:50px;min-width:50px;font-family:'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, Courier, monospace;font-size:12px;line-height:20px;color:rgba(27,31,35,.3);text-align:right;vertical-align:top;">&nbsp;</td> 
 <td style="line-height:20px;vertical-align:top;font-family:'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, Courier, monospace;font-size:12px;color:rgb(36,41,46);">if(getLock = lock.tryLock(0,50, TimeUnit.SECONDS)){ </td> 
 </tr> 
 <tr> 
 <td style="width:50px;min-width:50px;font-family:'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, Courier, monospace;font-size:12px;line-height:20px;color:rgba(27,31,35,.3);text-align:right;vertical-align:top;">&nbsp;</td> 
 <td style="line-height:20px;vertical-align:top;font-family:'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, Courier, monospace;font-size:12px;color:rgb(36,41,46);">log.info("Redisson获取到分布式锁:{},ThreadName:{}",CLOSE_ORDER_TASK_LOCK,Thread.currentThread().getName());</td> 
 </tr> 
 <tr> 
 <td style="width:50px;min-width:50px;font-family:'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, Courier, monospace;font-size:12px;line-height:20px;color:rgba(27,31,35,.3);text-align:right;vertical-align:top;">&nbsp;</td> 
 <td style="line-height:20px;vertical-align:top;font-family:'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, Courier, monospace;font-size:12px;color:rgb(36,41,46);">int hour = Integer.parseInt(PropertiesUtil.getProperty("close.order.task.time.hour","2"));</td> 
 </tr> 
 <tr> 
 <td style="width:50px;min-width:50px;font-family:'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, Courier, monospace;font-size:12px;line-height:20px;color:rgba(27,31,35,.3);text-align:right;vertical-align:top;">&nbsp;</td> 
 <td style="line-height:20px;vertical-align:top;font-family:'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, Courier, monospace;font-size:12px;color:rgb(36,41,46);">// iOrderService.closeOrder(hour);</td> 
 </tr> 
 <tr> 
 <td style="width:50px;min-width:50px;font-family:'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, Courier, monospace;font-size:12px;line-height:20px;color:rgba(27,31,35,.3);text-align:right;vertical-align:top;">&nbsp;</td> 
 <td style="line-height:20px;vertical-align:top;font-family:'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, Courier, monospace;font-size:12px;color:rgb(36,41,46);">}else{ </td> 
 </tr> 
 <tr> 
 <td style="width:50px;min-width:50px;font-family:'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, Courier, monospace;font-size:12px;line-height:20px;color:rgba(27,31,35,.3);text-align:right;vertical-align:top;">&nbsp;</td> 
 <td style="line-height:20px;vertical-align:top;font-family:'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, Courier, monospace;font-size:12px;color:rgb(36,41,46);">log.info("Redisson没有获取到分布式锁:{},ThreadName:{}", CLOSE_ORDER_TASK_LOCK,Thread.currentThread().getName());</td> 
 </tr> 
 <tr> 
 <td style="width:50px;min-width:50px;font-family:'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, Courier, monospace;font-size:12px;line-height:20px;color:rgba(27,31,35,.3);text-align:right;vertical-align:top;">&nbsp;</td> 
 <td style="line-height:20px;vertical-align:top;font-family:'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, Courier, monospace;font-size:12px;color:rgb(36,41,46);">}</td> 
 </tr> 
 <tr> 
 <td style="width:50px;min-width:50px;font-family:'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, Courier, monospace;font-size:12px;line-height:20px;color:rgba(27,31,35,.3);text-align:right;vertical-align:top;">&nbsp;</td> 
 <td style="line-height:20px;vertical-align:top;font-family:'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, Courier, monospace;font-size:12px;color:rgb(36,41,46);">} catch (InterruptedException e) { </td> 
 </tr> 
 <tr> 
 <td style="width:50px;min-width:50px;font-family:'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, Courier, monospace;font-size:12px;line-height:20px;color:rgba(27,31,35,.3);text-align:right;vertical-align:top;">&nbsp;</td> 
 <td style="line-height:20px;vertical-align:top;font-family:'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, Courier, monospace;font-size:12px;color:rgb(36,41,46);">log.error("Redisson分布式锁获取异常",e);</td> 
 </tr> 
 <tr> 
 <td style="width:50px;min-width:50px;font-family:'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, Courier, monospace;font-size:12px;line-height:20px;color:rgba(27,31,35,.3);text-align:right;vertical-align:top;">&nbsp;</td> 
 <td style="line-height:20px;vertical-align:top;font-family:'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, Courier, monospace;font-size:12px;color:rgb(36,41,46);">} finally { </td> 
 </tr> 
 <tr> 
 <td style="width:50px;min-width:50px;font-family:'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, Courier, monospace;font-size:12px;line-height:20px;color:rgba(27,31,35,.3);text-align:right;vertical-align:top;">&nbsp;</td> 
 <td style="line-height:20px;vertical-align:top;font-family:'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, Courier, monospace;font-size:12px;color:rgb(36,41,46);">if(!getLock){ </td> 
 </tr> 
 <tr> 
 <td style="width:50px;min-width:50px;font-family:'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, Courier, monospace;font-size:12px;line-height:20px;color:rgba(27,31,35,.3);text-align:right;vertical-align:top;">&nbsp;</td> 
 <td style="line-height:20px;vertical-align:top;font-family:'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, Courier, monospace;font-size:12px;color:rgb(36,41,46);">return;</td> 
 </tr> 
 <tr> 
 <td style="width:50px;min-width:50px;font-family:'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, Courier, monospace;font-size:12px;line-height:20px;color:rgba(27,31,35,.3);text-align:right;vertical-align:top;">&nbsp;</td> 
 <td style="line-height:20px;vertical-align:top;font-family:'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, Courier, monospace;font-size:12px;color:rgb(36,41,46);">}</td> 
 </tr> 
 <tr> 
 <td style="width:50px;min-width:50px;font-family:'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, Courier, monospace;font-size:12px;line-height:20px;color:rgba(27,31,35,.3);text-align:right;vertical-align:top;">&nbsp;</td> 
 <td style="line-height:20px;vertical-align:top;font-family:'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, Courier, monospace;font-size:12px;color:rgb(36,41,46);">lock.unlock();</td> 
 </tr> 
 <tr> 
 <td style="width:50px;min-width:50px;font-family:'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, Courier, monospace;font-size:12px;line-height:20px;color:rgba(27,31,35,.3);text-align:right;vertical-align:top;">&nbsp;</td> 
 <td style="line-height:20px;vertical-align:top;font-family:'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, Courier, monospace;font-size:12px;color:rgb(36,41,46);">log.info("Redisson分布式锁释放锁");</td> 
 </tr> 
 <tr> 
 <td style="width:50px;min-width:50px;font-family:'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, Courier, monospace;font-size:12px;line-height:20px;color:rgba(27,31,35,.3);text-align:right;vertical-align:top;">&nbsp;</td> 
 <td style="line-height:20px;vertical-align:top;font-family:'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, Courier, monospace;font-size:12px;color:rgb(36,41,46);">}</td> 
 </tr> 
 <tr> 
 <td style="width:50px;min-width:50px;font-family:'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, Courier, monospace;font-size:12px;line-height:20px;color:rgba(27,31,35,.3);text-align:right;vertical-align:top;">&nbsp;</td> 
 <td style="line-height:20px;vertical-align:top;font-family:'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, Courier, monospace;font-size:12px;color:rgb(36,41,46);">}</td> 
 </tr> 
 </tbody> 
</table>

四、如何使用codis

首先了解下codis，对codis的搭建心中有数，简单的codis图

![70 1][]

最关键的就是proxy，codis-proxy为redis的代理，通过这个代理，redis客户端可以实现对redis服务器的访问。服务器的修改变化数据迁移等对客户端来说都是透明的。proxy可以实现HA。

接下去就是codis-redis-group，codis把redis分成多个group，每个group实际只能有一个master，master可以有多个slave，也就是codis的容量实际取决于group的多少。

再看一张完整的图片

![70 2][]

codis是通过zookeeper协同数据的，另外还提供了dashboard方便用户管理集群，codis FE图形界面处理。codis adming 集群管理的命令行工具。

然后安装codis就看到如下界面：

![70 3][]

![70 4][]

可以看到，我们的proxy在19000端口启动，admin在11080端口启动。

又两个分组，一个占用513个slot，另外一个暂用511个slot

第一个group有两个redis，6381为master，6382为slave，可以在绿色的setting设置；第二个group只有6383一个服务器。上面会有new group添加group，add server把server添加到group里面。

如果需要使用多台机器，每台机器的zookeeper配置彼此即可，[参考][Link 3]

五、如何结合使用redisson+codis

怎么使用，直接把19000这个proxy的端口放到redisson的port的配置里面即可。

[Link 1]: https://blog.csdn.net/niuzaiwenjie/article/details/79875543
[cachecloud]: https://github.com/sohutv/cachecloud
[github]: https://github.com/twitter/twemproxy
[70]: /images/20220520/3a8b843cb1514ef9b1e09f9ad0797f8d.png
[codis]: https://github.com/CodisLabs/codis
[Link 2]: https://www.cnblogs.com/shanyou/p/4268896.html
[70 1]: /images/20220520/e6a4017c03bb4c289676f65d8d9563eb.png
[70 2]: /images/20220520/45739699e7584d76bd2d62a6935efafc.png
[70 3]: /images/20220520/10bfcab4ec1a4ba192f6b1a8df3612d8.png
[70 4]: /images/20220520/a07e0141011b49c68d3d459f4d1a40ca.png
[Link 3]: https://blog.csdn.net/qifengzou/article/details/72902503