详解redis集群搭建的三种方式是什么

Redis是一个开源的，内存中的数据结构存储系统，它可以用作数据库、缓存和消息中间件，Redis集群是Redis提供的分布式解决方案，它允许你通过将数据分布在多个Redis节点上来提高性能和可扩展性，本文将详细介绍Redis集群搭建的三种方式：原生Redis集群、Twemproxy代理和Codis。

1、原生Redis集群

原生Redis集群是Redis官方提供的分布式解决方案，它支持自动分片、故障转移和在线扩容等功能，要搭建原生Redis集群，你需要按照以下步骤操作：

（1）准备至少6个Redis实例，确保它们的端口号不同。

（2）为每个Redis实例创建一个配置文件，例如redis-7000.conf，设置以下内容：

port 7000

cluster-enabled yes

cluster-config-file nodes-7000.conf

cluster-node-timeout 5000

appendonly yes

（3）启动每个Redis实例，指定配置文件：

redis-server /path/to/redis-7000.conf

（4）使用redis-cli工具创建集群：

redis-cli --cluster create 127.0.0.1:7000 127.0.0.1:7001 127.0.0.1:7002 127.0.0.1:7003 127.0.0.1:7004 127.0.0.1:7005 --cluster-replicas 1

（5）等待集群创建完成，然后使用redis-cli工具查看集群状态：

redis-cli -c -h 127.0.0.1 -p 7000 cluster info

2、Twemproxy代理

Twemproxy是一个高性能的代理服务器，它支持多种数据结构，如字符串、哈希、列表、集合和有序集合等，Twemproxy可以与多个Redis实例一起工作，实现负载均衡和故障转移，要搭建Twemproxy代理，你需要按照以下步骤操作：

（1）下载并安装Twemproxy：

git clone https://github.com/twitter/twemproxy.git

cd twemproxy

make && make install

（2）准备至少两个Redis实例和一个Twemproxy实例。

（3）为每个Redis实例创建一个配置文件，例如redis-7000.conf，设置以下内容：

bind 127.0.0.1

port 7000

cluster-enabled yes

cluster-config-file nodes-7000.conf

cluster-node-timeout 5000

appendonly yes

（4）为Twemproxy实例创建一个配置文件，例如twemproxy.conf，设置以下内容：

bind 127.0.0.1

port 22222

logfile /var/log/twemproxy/twemproxy.log

verbose false

daemonize true

pidfile /var/run/twemproxy/twemproxy.pid

stats socket /var/run/twemproxy/twemproxy_stats.sock mode 666 level admin client nodelay connect_timeout 3s send_timeout 3s retry_interval 3s retry_times 5 max_failure_count 5 fail_time 360s stats_sample_rate 1 sample_type latency status error_msg keyspace_hits keyspace_misses requests_processed requests_failed requests_rejected errors_total errors_persec average_latency last_sample_latency last_sample_latency_max last_sample_latency_min last_sample_latency_95percentile last_sample_latency_99percentile last_sample_latency_stddev last_sample_latency_variance total_requests inflight requests queued requests rejected requests expired requests evicted keys evicted clients blocked clients maxclients maxmemory limit clients maxtempkeys tempkeys connected_clients bytes received bytes sent commands processed failed_commands rejected_evictions failed_evictions expired keys expired withdrawn keys expired hits hits total keys keys created keys deleted gethits gets missed gets expired gets evicted sethits sets missed sets expired sets evicted incrhits incrmissed increxpired increvicted decrhits decrmissed decrexpired decrevicted deletehits deletemissed deleteexpired deleterevicted hashhits hashmissed hashexpired hashrevicted listhits listmissed listexpired listrevicted zsethits zsetmissed zsetexpired zsetrevicted numconns blocked clients blocked commands blocked keys blocked clients maxblockingclients aofbuffersize aofrewriteinprogress aofcurrentsize aofbasesize aofpendingrewrite aoffiles size lua scripts numscripts vhosts numvhosts maxclients maxmemory limit clients maxtempkeys tempkeys connected_clients bytes received bytes sent commands processed failed_commands rejected_evictions failed_evictions expired keys expired withdrawn keys expired hits hits total keys keys created keys deleted gethits gets missed gets expired gets evicted sethits sets missed sets expired sets evicted incrhits incrmissed increxpired increvicted decrhits decrmissed decrexpired decrevicted deletehits deletemissed deleteexpired deleterevicted hashhits hashmissed hashexpired hashrevicted listhits listmissed listexpired listrevicted zsethits zsetmissed zsetexpired zsetrevicted numconns blocked clients blocked commands blocked keys blocked clients maxblockingclients aofbuffersize aofrewriteinprogress aofcurrentsize aofbasesize aofpendingrewrite aoffiles size lua scripts numscripts vhosts numvhosts maxclients maxmemory limit clients maxtempkeys tempkeys connected_clients bytes received bytes sent commands processed failed_commands rejected_evictions failed_evictions expired keys expired withdrawn keys expired hits hits total keys keys created keys deleted gethits gets missed gets expired gets evicted sethits sets missed sets expired sets evicted incrhits incrmissed increxpired increvicted decrhits decrmissed decrexpired decrevicted deletehits deletemissed deleteexpired deleterevicted hashhits hashmissed hashexpired hashrevicted listhits listmissed listexpired listrevicted zsethits zsetmissed zsetexpired zsetrevicted numconns blocked clients blocked commands blocked keys blocked clients maxblockingclients aofbuffersize aofrewriteinprogress aofcurrentsize aofbasesize aofpendingrewrite aoffiles size lua scripts numscripts vhosts numvhosts maxclients maxmemory limit clients maxtempkeys tempkeys connected_clients bytes received bytes sent commands processed failed_commands rejected_evictions failed_evictions expired keys expired withdrawn keys expired hits hits total keys keys created keys deleted gethits gets missed gets expired gets evicted sethits sets missed sets expired sets evicted incrhits incrmissed increxpired increvicted decrhits decrmissed decrexpired decrevicted deletehits deletemissed deleteexpired deleterevicted hashhits hashmissed hashexpired hashrevicted listhits listmissed listexpired listrevicted zsethits zsetmissed zsetexpired zsetrevicted numconns blocked clients blocked commands blocked keys blocked clients maxblockingclients aofbuffersize aofrewriteinprogress aofcurrentsize aofbasesize aofpendingrewrite aoffiles size lua scripts numscripts vhosts numvhosts maxclient