Home Database Mysql Tutorial Redis系列-安装部署维护篇

Redis系列-安装部署维护篇

Jun 07, 2016 pm 05:23 PM
redis

redis高性能很大程度上源于它是个内存型数据库,它的高性能表现在:set操作11w/s,get操作8.1w/s,为了进一步加深对redis的理解总

Redis是个高性能的key-value数据库,它的key具有丰富的数据结构:string,hash,list set和sorted set。作为NOSQL,比起memcache之类,不仅仅key数据结构丰富,而且具有持久化的功能,并且能够支持主从复制,,很方便构建集群。

redis高性能很大程度上源于它是个内存型数据库,它的高性能表现在:set操作11w/s,get操作8.1w/s,为了进一步加深对redis的理解总结,我打算写个redis系列的文章。这里主要谈谈redis安装部署及运维维护。

1、下载安装

[root@ ]# wget -c     #下载 
[root@ ]# tar -zxvf redis-2.4.17.tar.gz  #解压 
[root@ ]# cd redis-2.4.17 
[root@ redis-2.4.17]# make  #编译 
[root@ redis-2.4.17]# make install #安装 

安装完毕,常用工具会自动拷贝到/user/loca/bin目录下。做为服务器,我们常常还需要把redis设置成开机自启动,源码包中有个很好用的脚本,执行脚步根据提示输入即可。

[root@ redis-2.4.17]# cd utils/ 
[root@ utils]# ./install_server.sh 
Welcome to the redis service installer 
This script will help you easily set up a running redis server 
 
 
Please select the redis port for this instance: [6379] 
Selecting default: 6379 
Please select the redis config file name [/etc/redis/6379.conf] 
Selected default - /etc/redis/6379.conf 
Please select the redis log file name [/var/log/redis_6379.log] 
Selected default - /var/log/redis_6379.log 
Please select the data directory for this instance [/var/lib/redis/6379] 
Selected default - /var/lib/redis/6379 
Please select the redis executable path [/usr/local/bin/redis-server] 
Copied /tmp/6379.conf => /etc/init.d/redis_6379 
Installing service... 
Successfully added to chkconfig! 
Successfully added to runlevels 345! 
Starting Redis server... 
Installation successful! 

注意执行install_server.sh,需要先进入utils目录,不然脚本会报错,提示找不到相应文件。安装完服务,redis自动启动,可以用ps命令查看到相关信息:

[root@ utils]# ps -ef | grep redis 
root      4554    1  0 10:55 ?        00:00:02 /usr/local/bin/redis-server /etc/redis/6379.conf 
root      4564  2808  0 10:59 pts/0    00:00:00 grep redis 

2、手动启动关闭服务

[root@ utils]# /etc/init.d/redis_6379 stop  #关闭 
[root@ utils]# /etc/init.d/redis_6379 start  #启动 

3、通过客户端命令行工具连接redis服务查看redis相关信息

a)连接

[root@ utils]# redis-cli 

redis 127.0.0.1:6379> 

b)其他指令

redis 127.0.0.1:6379> info  #查看server版本内存使用连接等信息 
 
redis 127.0.0.1:6379> client list  #获取客户连接列表 
 
redis 127.0.0.1:6379> client kill 127.0.0.1:33441 #终止某个客户端连接 
 
redis 127.0.0.1:6379> dbsize #当前保存key的数量 
 
redis 127.0.0.1:6379> save #立即保存数据到硬盘 
 
redis 127.0.0.1:6379> bgsave #异步保存数据到硬盘 
 
redis 127.0.0.1:6379> flushdb #当前库中移除所有key 
 
redis 127.0.0.1:6379> flushall #移除所有key从所有库中 
 
redis 127.0.0.1:6379> lastsave #获取上次成功保存到硬盘的unix时间戳 
 
redis 127.0.0.1:6379> monitor #实时监测服务器接收到的请求 
 
redis 127.0.0.1:6379> slowlog len #查询慢查询日志条数 
(integer) 3 
 
redis 127.0.0.1:6379> slowlog get #返回所有的慢查询日志,最大值取决于slowlog-max-len配置 
 
redis 127.0.0.1:6379> slowlog get 2 #打印两条慢查询日志 
 
redis 127.0.0.1:6379> slowlog reset #清空慢查询日志信息 

通过以上操作,单台服务器基本跑起来了,不过后面的路还很长很长。

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