Centos下Redis一主多从架构搭建
搭建目标:因为自己笔记本电脑配置较低的原因，模拟两台机器之间搭建一主一从的架构，主节点Redis主要用来写数据，数据写入到主节点的Redis,然后从节点就可以同步主节点的所有数据，从节点只能读取数据，禁止写入任何数据，这样就可以实现主节点写数据，从节点读数据的读写分离架构，实现思路如下
1、在两台机器分别安装Redis
具体安装步骤，参考这篇博文安装: http://www.cnblogs.com/sunny1009/articles/7866034.html
2、主从集群配置
两台机器ip：
192.168.1.140-->作为主节点
192.168.1.142-->作为从节点
(1)、在6379.conf下配置，首先在142机器6379.conf上配置，slaveof标示代表此机器代表从节点
代码语言：javascript复制#配置主节点的ip地址
slaveof 192.168.1.140 6379(2)、强制读写分离，配置子节点为只读状态，会拒绝所有的写操作
代码语言：javascript复制slave-read-only yes3、集群安全认证(在主节点配置)
代码语言：javascript复制#master上启用安全认证
requirepass admin@masteradmin@master为主节点的安全口令
4、从节点开启密码认证(从节点配置)
配置与主节点安全口令一致
代码语言：javascript复制#从节点开启密码认证
masterauth admin@master5、分别在主节点的从节点开启Redis对外访问
代码语言：javascript复制#绑定本机的ip地址
bind 192.168.1.X
protected-mode no6、启动主节点和从节点Redis进行验证
登录主节点Redis
代码语言：javascript复制cd /etc/init.d/
./redis_6379 start
redis-cli -h 192.168.1.140 -p 6379 -a admin@master执行命令
代码语言：javascript复制info replication
可以看到所属的角色和主节点下从节点的信息
登录从节点Redis
代码语言：javascript复制cd /etc/init.d/
./redis_6379 start
redis-cli -h 192.168.1.140 -p 6379 -ainfo replication
可以看到所属的角色和对应连接的主节点信息
查看主节点和从节点下是否有缓存key
代码语言：javascript复制keys *
查看主节点和从节点数据都为空，没任何缓存数据
测试从节点是否能写入数据
不能写入，说明配置成功，从节点只能读数据不能写数据，如果再实现主节点写数据，将数据同步到从节点接可以实现读写分离的架构
测试往主节点写数据，查看从节点是否可以同步到从节点的数据
代码语言：javascript复制set key1 value1
get key1往主节点写了一条数据，key为key1，值为value1
直接到从节点查看是否可以同步到主节点的数据
代码语言：javascript复制get key1
发现从节点已经同步到主节点的数据了，到此，最基本的主从架构实现读写分离搭建成功，按照以上步骤还可以配置多个从节点实现一主多从的集群架构，从而实现缓存的高性能，高可用和水平扩展；当然在大流量的情况下会出现主节点或者其他从节点宕机的情况，这些后续会慢慢一步一步解决，例如:Redis的容灾备份，雪崩，哨兵等等。。。
7、对读写分离集群QPS压测
利用Redis提供的压测工具方便快捷，具体压测步骤如下
代码语言：javascript复制cd /usr/local/redis-3.2.8/src
./redis-benchmark -h 192.168.1.140由于自己的集群搭建在虚拟机下，配置:单核1G的cpu，性能很差，所以采用默认参数压测即可
-c <clients> Number of parallel connections (default 50) -n <requests> Total number of requests (default 100000) -d <size> Data size of SET/GET value in bytes (default 2)
代码语言：javascript复制====== PING_INLINE ======
100000 requests completed in 2.51 seconds
50 parallel clients
3 bytes payload
keep alive: 1
89.64% <= 1 milliseconds
98.37% <= 2 milliseconds
99.45% <= 3 milliseconds
99.59% <= 4 milliseconds
99.75% <= 5 milliseconds
99.80% <= 6 milliseconds
99.82% <= 7 milliseconds
99.85% <= 8 milliseconds
99.86% <= 9 milliseconds
99.86% <= 10 milliseconds
99.87% <= 22 milliseconds
99.89% <= 23 milliseconds
99.91% <= 30 milliseconds
99.94% <= 37 milliseconds
99.95% <= 54 milliseconds
99.95% <= 58 milliseconds
99.97% <= 59 milliseconds
100.00% <= 59 milliseconds
39824.77 requests per second
====== PING_BULK ======
100000 requests completed in 2.80 seconds
50 parallel clients
3 bytes payload
keep alive: 1
83.94% <= 1 milliseconds
96.93% <= 2 milliseconds
98.54% <= 3 milliseconds
99.04% <= 4 milliseconds
99.38% <= 5 milliseconds
99.58% <= 6 milliseconds
99.68% <= 7 milliseconds
99.73% <= 8 milliseconds
99.78% <= 10 milliseconds
99.80% <= 11 milliseconds
99.82% <= 14 milliseconds
99.83% <= 15 milliseconds
99.86% <= 16 milliseconds
99.87% <= 25 milliseconds
99.88% <= 26 milliseconds
99.94% <= 27 milliseconds
99.94% <= 45 milliseconds
99.99% <= 78 milliseconds
100.00% <= 78 milliseconds
35752.59 requests per second
====== SET ======
100000 requests completed in 2.70 seconds
50 parallel clients
3 bytes payload
keep alive: 1
86.10% <= 1 milliseconds
97.34% <= 2 milliseconds
98.72% <= 3 milliseconds
99.17% <= 4 milliseconds
99.30% <= 5 milliseconds
99.42% <= 6 milliseconds
99.47% <= 7 milliseconds
99.52% <= 8 milliseconds
99.61% <= 9 milliseconds
99.70% <= 10 milliseconds
99.79% <= 15 milliseconds
99.82% <= 22 milliseconds
99.84% <= 26 milliseconds
99.85% <= 27 milliseconds
99.88% <= 28 milliseconds
99.88% <= 29 milliseconds
99.89% <= 45 milliseconds
99.89% <= 46 milliseconds
99.93% <= 47 milliseconds
99.94% <= 52 milliseconds
99.96% <= 53 milliseconds
99.98% <= 54 milliseconds
99.98% <= 58 milliseconds
99.98% <= 59 milliseconds
100.00% <= 59 milliseconds
37009.62 requests per second
====== GET ======
100000 requests completed in 2.67 seconds
50 parallel clients
3 bytes payload
keep alive: 1
87.35% <= 1 milliseconds
97.68% <= 2 milliseconds
99.00% <= 3 milliseconds
99.26% <= 4 milliseconds
99.42% <= 5 milliseconds
99.55% <= 6 milliseconds
99.62% <= 7 milliseconds
99.69% <= 8 milliseconds
99.74% <= 16 milliseconds
99.79% <= 17 milliseconds
99.82% <= 18 milliseconds
99.83% <= 19 milliseconds
99.85% <= 20 milliseconds
99.86% <= 27 milliseconds
99.86% <= 28 milliseconds
99.91% <= 47 milliseconds
99.92% <= 48 milliseconds
99.95% <= 49 milliseconds
99.96% <= 57 milliseconds
99.96% <= 58 milliseconds
99.96% <= 70 milliseconds
99.99% <= 71 milliseconds
100.00% <= 71 milliseconds
37467.21 requests per second
====== INCR ======
100000 requests completed in 2.65 seconds
50 parallel clients
3 bytes payload
keep alive: 1
88.43% <= 1 milliseconds
97.81% <= 2 milliseconds
98.96% <= 3 milliseconds
99.33% <= 4 milliseconds
99.48% <= 5 milliseconds
99.49% <= 6 milliseconds
99.55% <= 7 milliseconds
99.57% <= 8 milliseconds
99.66% <= 9 milliseconds
99.76% <= 10 milliseconds
99.81% <= 11 milliseconds
99.83% <= 15 milliseconds
99.85% <= 16 milliseconds
99.87% <= 19 milliseconds
99.90% <= 20 milliseconds
99.92% <= 28 milliseconds
99.92% <= 44 milliseconds
99.94% <= 60 milliseconds
99.98% <= 61 milliseconds
100.00% <= 61 milliseconds
37792.89 requests per second
====== LPUSH ======
100000 requests completed in 2.62 seconds
50 parallel clients
3 bytes payload
keep alive: 1
86.97% <= 1 milliseconds
97.55% <= 2 milliseconds
99.01% <= 3 milliseconds
99.38% <= 4 milliseconds
99.47% <= 5 milliseconds
99.55% <= 6 milliseconds
99.67% <= 7 milliseconds
99.74% <= 8 milliseconds
99.75% <= 9 milliseconds
99.78% <= 10 milliseconds
99.83% <= 11 milliseconds
99.84% <= 18 milliseconds
99.86% <= 19 milliseconds
99.87% <= 24 milliseconds
99.89% <= 29 milliseconds
99.89% <= 30 milliseconds
99.89% <= 39 milliseconds
99.92% <= 45 milliseconds
99.94% <= 46 milliseconds
99.95% <= 53 milliseconds
99.97% <= 54 milliseconds
100.00% <= 54 milliseconds
38109.76 requests per second
====== RPUSH ======
100000 requests completed in 2.89 seconds
50 parallel clients
3 bytes payload
keep alive: 1
85.96% <= 1 milliseconds
97.12% <= 2 milliseconds
98.62% <= 3 milliseconds
99.02% <= 4 milliseconds
99.20% <= 5 milliseconds
99.45% <= 6 milliseconds
99.59% <= 7 milliseconds
99.67% <= 8 milliseconds
99.68% <= 9 milliseconds
99.72% <= 10 milliseconds
99.75% <= 12 milliseconds
99.82% <= 13 milliseconds
99.83% <= 17 milliseconds
99.86% <= 18 milliseconds
99.88% <= 32 milliseconds
99.89% <= 33 milliseconds
99.93% <= 52 milliseconds
99.94% <= 56 milliseconds
99.95% <= 76 milliseconds
99.97% <= 79 milliseconds
99.97% <= 80 milliseconds
100.00% <= 112 milliseconds
34650.04 requests per second
====== LPOP ======
100000 requests completed in 2.67 seconds
50 parallel clients
3 bytes payload
keep alive: 1
86.79% <= 1 milliseconds
97.77% <= 2 milliseconds
98.91% <= 3 milliseconds
99.28% <= 4 milliseconds
99.52% <= 5 milliseconds
99.66% <= 6 milliseconds
99.73% <= 7 milliseconds
99.80% <= 8 milliseconds
99.80% <= 9 milliseconds
99.83% <= 10 milliseconds
99.84% <= 11 milliseconds
99.86% <= 12 milliseconds
99.88% <= 22 milliseconds
99.88% <= 23 milliseconds
99.88% <= 24 milliseconds
99.90% <= 25 milliseconds
99.91% <= 49 milliseconds
99.92% <= 50 milliseconds
99.94% <= 51 milliseconds
99.95% <= 52 milliseconds
99.97% <= 55 milliseconds
100.00% <= 56 milliseconds
37453.18 requests per second
====== RPOP ======
100000 requests completed in 2.54 seconds
50 parallel clients
3 bytes payload
keep alive: 1
89.33% <= 1 milliseconds
98.10% <= 2 milliseconds
99.42% <= 3 milliseconds
99.61% <= 4 milliseconds
99.69% <= 5 milliseconds
99.78% <= 6 milliseconds
99.80% <= 7 milliseconds
99.82% <= 8 milliseconds
99.84% <= 9 milliseconds
99.86% <= 10 milliseconds
99.88% <= 11 milliseconds
99.89% <= 15 milliseconds
99.90% <= 17 milliseconds
99.91% <= 21 milliseconds
99.93% <= 22 milliseconds
99.94% <= 65 milliseconds
99.95% <= 77 milliseconds
99.98% <= 78 milliseconds
99.98% <= 79 milliseconds
100.00% <= 79 milliseconds
39401.10 requests per second
====== SADD ======
100000 requests completed in 2.38 seconds
50 parallel clients
3 bytes payload
keep alive: 1
89.92% <= 1 milliseconds
98.57% <= 2 milliseconds
99.48% <= 3 milliseconds
99.68% <= 4 milliseconds
99.78% <= 5 milliseconds
99.78% <= 6 milliseconds
99.79% <= 7 milliseconds
99.87% <= 8 milliseconds
99.89% <= 10 milliseconds
99.91% <= 11 milliseconds
99.91% <= 18 milliseconds
99.95% <= 21 milliseconds
99.95% <= 59 milliseconds
99.96% <= 60 milliseconds
99.99% <= 61 milliseconds
100.00% <= 61 milliseconds
41928.72 requests per second
====== SPOP ======
100000 requests completed in 2.69 seconds
50 parallel clients
3 bytes payload
keep alive: 1
85.19% <= 1 milliseconds
97.62% <= 2 milliseconds
98.98% <= 3 milliseconds
99.34% <= 4 milliseconds
99.50% <= 5 milliseconds
99.67% <= 6 milliseconds
99.73% <= 7 milliseconds
99.75% <= 8 milliseconds
99.80% <= 10 milliseconds
99.84% <= 11 milliseconds
99.88% <= 12 milliseconds
99.89% <= 34 milliseconds
99.92% <= 37 milliseconds
99.94% <= 61 milliseconds
99.96% <= 65 milliseconds
99.97% <= 66 milliseconds
100.00% <= 66 milliseconds
37133.31 requests per second
====== LPUSH (needed to benchmark LRANGE) ======
100000 requests completed in 2.50 seconds
50 parallel clients
3 bytes payload
keep alive: 1
88.30% <= 1 milliseconds
98.12% <= 2 milliseconds
99.26% <= 3 milliseconds
99.40% <= 4 milliseconds
99.52% <= 5 milliseconds
99.62% <= 6 milliseconds
99.63% <= 7 milliseconds
99.71% <= 8 milliseconds
99.80% <= 10 milliseconds
99.81% <= 13 milliseconds
99.83% <= 14 milliseconds
99.86% <= 15 milliseconds
99.86% <= 27 milliseconds
99.88% <= 28 milliseconds
99.91% <= 44 milliseconds
99.91% <= 45 milliseconds
99.93% <= 46 milliseconds
100.00% <= 46 milliseconds
39952.06 requests per second
====== LRANGE_100 (first 100 elements) ======
100000 requests completed in 2.63 seconds
50 parallel clients
3 bytes payload
keep alive: 1
88.45% <= 1 milliseconds
97.64% <= 2 milliseconds
98.84% <= 3 milliseconds
99.06% <= 4 milliseconds
99.26% <= 5 milliseconds
99.34% <= 6 milliseconds
99.41% <= 7 milliseconds
99.46% <= 8 milliseconds
99.59% <= 9 milliseconds
99.61% <= 10 milliseconds
99.65% <= 11 milliseconds
99.69% <= 12 milliseconds
99.70% <= 13 milliseconds
99.72% <= 14 milliseconds
99.75% <= 15 milliseconds
99.79% <= 16 milliseconds
99.83% <= 17 milliseconds
99.84% <= 25 milliseconds
99.86% <= 26 milliseconds
99.89% <= 27 milliseconds
99.89% <= 31 milliseconds
99.91% <= 32 milliseconds
99.93% <= 33 milliseconds
99.94% <= 38 milliseconds
99.99% <= 45 milliseconds
99.99% <= 88 milliseconds
100.00% <= 89 milliseconds
100.00% <= 89 milliseconds
38022.81 requests per second
====== LRANGE_300 (first 300 elements) ======
100000 requests completed in 2.91 seconds
50 parallel clients
3 bytes payload
keep alive: 1
84.62% <= 1 milliseconds
95.68% <= 2 milliseconds
97.95% <= 3 milliseconds
98.55% <= 4 milliseconds
98.94% <= 5 milliseconds
99.16% <= 6 milliseconds
99.34% <= 7 milliseconds
99.44% <= 8 milliseconds
99.52% <= 9 milliseconds
99.63% <= 10 milliseconds
99.65% <= 11 milliseconds
99.70% <= 12 milliseconds
99.74% <= 13 milliseconds
99.77% <= 14 milliseconds
99.79% <= 15 milliseconds
99.83% <= 16 milliseconds
99.83% <= 21 milliseconds
99.86% <= 25 milliseconds
99.90% <= 26 milliseconds
99.92% <= 48 milliseconds
99.92% <= 52 milliseconds
99.96% <= 80 milliseconds
99.98% <= 81 milliseconds
100.00% <= 81 milliseconds
34411.56 requests per second
====== LRANGE_500 (first 450 elements) ======
100000 requests completed in 2.61 seconds
50 parallel clients
3 bytes payload
keep alive: 1
87.74% <= 1 milliseconds
98.11% <= 2 milliseconds
99.33% <= 3 milliseconds
99.46% <= 4 milliseconds
99.56% <= 5 milliseconds
99.62% <= 6 milliseconds
99.69% <= 7 milliseconds
99.76% <= 8 milliseconds
99.79% <= 9 milliseconds
99.82% <= 10 milliseconds
99.83% <= 11 milliseconds
99.84% <= 12 milliseconds
99.87% <= 13 milliseconds
99.88% <= 23 milliseconds
99.89% <= 28 milliseconds
99.92% <= 29 milliseconds
99.93% <= 30 milliseconds
99.94% <= 49 milliseconds
99.94% <= 50 milliseconds
99.95% <= 51 milliseconds
99.98% <= 52 milliseconds
99.98% <= 73 milliseconds
100.00% <= 73 milliseconds
38372.98 requests per second
====== LRANGE_600 (first 600 elements) ======
100000 requests completed in 2.61 seconds
50 parallel clients
3 bytes payload
keep alive: 1
86.53% <= 1 milliseconds
97.54% <= 2 milliseconds
98.95% <= 3 milliseconds
99.41% <= 4 milliseconds
99.64% <= 5 milliseconds
99.79% <= 6 milliseconds
99.80% <= 7 milliseconds
99.85% <= 8 milliseconds
99.88% <= 10 milliseconds
99.89% <= 12 milliseconds
99.89% <= 13 milliseconds
99.91% <= 14 milliseconds
99.93% <= 15 milliseconds
99.94% <= 59 milliseconds
99.98% <= 70 milliseconds
100.00% <= 70 milliseconds
38328.86 requests per second
====== MSET (10 keys) ======
100000 requests completed in 2.83 seconds
50 parallel clients
3 bytes payload
keep alive: 1
82.10% <= 1 milliseconds
95.96% <= 2 milliseconds
98.25% <= 3 milliseconds
98.87% <= 4 milliseconds
99.25% <= 5 milliseconds
99.34% <= 6 milliseconds
99.48% <= 7 milliseconds
99.49% <= 8 milliseconds
99.57% <= 9 milliseconds
99.60% <= 10 milliseconds
99.65% <= 11 milliseconds
99.76% <= 12 milliseconds
99.77% <= 13 milliseconds
99.83% <= 14 milliseconds
99.85% <= 17 milliseconds
99.86% <= 18 milliseconds
99.88% <= 19 milliseconds
99.88% <= 24 milliseconds
99.89% <= 33 milliseconds
99.91% <= 34 milliseconds
99.94% <= 48 milliseconds
99.95% <= 52 milliseconds
99.95% <= 63 milliseconds
99.97% <= 64 milliseconds
100.00% <= 64 milliseconds
35298.27 requests per second测试结果分析：并发模拟Redis一列列的命令执行发送请求响应的时间
