Redis集群Twemproxy

Redis集群Twemproxy

1、环境部署：

2. Cos1、Cos2和cos3安装redis

3. Cos1安装twemproxy：

[root@cos1 ~]# cd /usr/src/
[root@cos1src]# wget http://twemproxy.googlecode.com/files/nutcracker-0.2.4.tar.gz[/code] 
3.2解压安装
[root@cos1 ~]# tar xf nutcracker-0.2.4.tar.gz
[root@cos1 ~]# cd nutcracker-0.2.4
[root@cos1 nutcracker-0.2.4]#  ./configure --prefix=/opt/phpdba/nutcracker-0.2.4
[root@cos1 nutcracker-0.2.4]# make && make install
[root@cos1 nutcracker-0.2.4]# cp -r conf scripts /opt/phpdba/nutcracker-0.2.4

3.3 配置环境变量
[root@cos1 ~]# cd /etc/profile.d/
[root@cos1 profile.d]# vim twemproxy.sh
#!/bin/sh
#set Rutcracker environment
export RUTCRACKER_HOME=/opt/phpdba/nutcracker-0.2.4
export PATH=$RUTCRACKER_HOME/bin:$PATH
source twemporxy.sh

3.4 修改配置文件

[root@cos1 ~]# vim /opt/phpdba/nutcracker-0.2.4/conf/nutcracker.yml
alpha:
listen: 127.0.0.1:22121
hash: fnv1a_64
distribution: ketama
auto_eject_hosts: true
redis: true
server_retry_timeout: 2000
server_failure_limit: 1
servers:
- 192.168.1.112:6379:1 server1
- 192.168.1.113:6379:1 server2
3.5检查语法

[root@cos1 ~]# nutcracker -c /opt/phpdba/nutcracker-0.2.4/conf/nutcracker.yml -t
nutcracker: configuration file '/opt/phpdba/nutcracker-0.2.4/conf/nutcracker.yml' syntax is ok
[root@cos1 ~]# nutcracker -d -c /opt/phpdba/nutcracker-0.2.4/conf/nutcracker.yml


性能测试
这里使用redis自带的redis-benchmark进行简单的性能测试，测试结果如下:
1.测试：
a.通过twemproxy测试：

[root@puppet01 ~]# redis-benchmark -h 127.0.0.1 -q -t set,get,incr,lpush,lpop,sadd,spop,lpush,lrange -c 100 -p 22121

SET: 62972.29 requests per second
GET: 87336.24 requests per second
INCR: 85034.02 requests per second
LPUSH: 81699.35 requests per second
LPOP: 82987.55 requests per second
SADD: 85034.02 requests per second
SPOP: 87412.59 requests per second
LPUSH (needed to benchmark LRANGE): 80840.74 requests per second
LRANGE_100 (first 100 elements): 28384.90 requests per second
LRANGE_300 (first 300 elements): 9022.01 requests per second
LRANGE_500 (first 450 elements): 4810.00 requests per second
LRANGE_600 (first 600 elements): 3363.04 requests per second

b.通过对后端redis查看：
[root@puppet02 ~]# redis-cli
127.0.0.1:6379> KEYS *
1) "counter:__rand_int__"
127.0.0.1:6379>
[root@localhost ~]# redis-cli
127.0.0.1:6379> KEYS *
1) "mylist"
2) "key:__rand_int__"

发现我们的测试数据分片到了两个redis实例中。
2.查看键值分布
[root@puppet01 ~]# redis-cli info|grep db0
db0:keys=1,expires=0,avg_ttl=0
[root@puppet02 ~]# redis-cli info|grep db0
db0:keys=1,expires=0,avg_ttl=0
[root@puppet02 ~]#
[root@localhost ~]# redis-cli info|grep db0
db0:keys=2,expires=0,avg_ttl=0

测试结果:以基本的命令通过twemproxy性能有所下降;通过twemproxy分布基本平均。测试数据以业务测试为准。