redis部署及使用
一、redis安装
1、redis下载地址
wget http://download.redis.io/releases/redis-3.2.6.tar.gz
tar xf redis-3.2.6.tar.gz
cd redis-3.2.6
make
cd /home/tools
mkdir -p redis6380 #创建redis的工作目录
cp /home/tools/redis-3.2.6/src/redis-server /home/tools/redis6380/ #复制启动文件到redis6380目录
cp /home/tools/redis-3.2.6/redis.conf /home/tools/redis6380/ #复制配置文件到redis6380目录
2、修改配置文件
egrep -v "^$|^#" redis.conf.bak >>redis.conf #将配置文件的空行和以#号开头的行去掉
cat /home/tools/redis6380/redis.conf
bind 127.0.0.1
protected-mode yes
#requirepass root #用户redis管理的认证用户
port 6380 #修改redis服务的端口
tcp-backlog 511
timeout 0
tcp-keepalive 300
daemonize yes
supervised no
pidfile "/var/run/redis_6380.pid" #修改pid文件名
loglevel notice
logfile "redis6380.log" #修改日志文件名
databases 16
save 900 1
save 300 10
save 60 10000
stop-writes-on-bgsave-error yes
rdbcompression yes
rdbchecksum yes
dbfilename "dump.rdb"
dir "/home/tools/redis6380"
slave-serve-stale-data yes
slave-read-only yes
repl-diskless-sync no
repl-diskless-sync-delay 5
repl-disable-tcp-nodelay no
slave-priority 100
appendonly no
appendfilename "appendonly.aof"
appendfsync everysec
no-appendfsync-on-rewrite no
auto-aof-rewrite-percentage 100
auto-aof-rewrite-min-size 64mb
aof-load-truncated yes
lua-time-limit 5000
slowlog-log-slower-than 10000
slowlog-max-len 128
latency-monitor-threshold 0
notify-keyspace-events ""
hash-max-ziplist-entries 512
hash-max-ziplist-value 64
list-max-ziplist-size -2
list-compress-depth 0
set-max-intset-entries 512
zset-max-ziplist-entries 128
zset-max-ziplist-value 64
hll-sparse-max-bytes 3000
activerehashing yes
client-output-buffer-limit normal 0 0 0
client-output-buffer-limit slave 256mb 64mb 60
client-output-buffer-limit pubsub 32mb 8mb 60
hz 10
aof-rewrite-incremental-fsync yes
#masterauth root #主从复制用于认证的用户，也就是redis管理认证的用户
slaveof 127.0.0.1 6382 #设置从库
3、启动redis服务
[root@redis redis6380]# pwd
/home/tools/redis6380
[root@redis redis6380]# ./redis-server ./redis.conf
4、检查6380端口是否存在
[root@redis redis6380]# ss -tlunp|grep 6380
tcp LISTEN 0 128 127.0.0.1:6380 *:* users:(("redis-server",5382,4))
5、连接redis
[root@redis tools]# /home/tools/redis-3.2.6/src/redis-cli -p 6380
127.0.0.1:6380>
6、添加软连接，方便管理
ln -s /home/tools/redis-3.2.6/src/redis-cli /usr/bin/redis-cli
[root@redis tools]# redis-cli -p 6380
127.0.0.1:6380> auth root #认证，root为配置文件中设置的密码
OK
7、redis简单使用
7.1、redis事务
127.0.0.1:6380> zadd salary 200 ljx
(integer) 1
127.0.0.1:6380> zadd salary 3000 oldboy
(integer) 1
127.0.0.1:6380> multi
OK
127.0.0.1:6380> zincrby salary 1000 ljx
QUEUED
127.0.0.1:6380> zincrby salary -1000 oldboy
QUEUED
127.0.0.1:6380> exec
1) "1200"
2) "2000"
7.2、慢日志查询
127.0.0.1:6380> config set slowlog-log-slower-than 1000
OK
127.0.0.1:6380> config set slowlog-max-len 1000
OK
127.0.0.1:6380> config get slow*
1) "slowlog-log-slower-than"
2) "1000"
3) "slowlog-max-len"
4) "1000"
7.3、备份数据
[root@redis redis6380]# mv dump.rdb /root/
[root@redis redis6380]# ./redis-server ./redis.conf
[root@redis redis6380]# redis-cli -p 6380
127.0.0.1:6380> auth root
OK
127.0.0.1:6380> keys *
(empty list or set)
127.0.0.1:6380> shutdown
not connected> exit
[root@redis redis6380]# mv /root/dump.rdb .
mv: overwrite `./dump.rdb'? y
[root@redis redis6380]# ./redis-server ./redis.conf
[root@redis redis6380]# redis-cli -p 6380
127.0.0.1:6380> auth root
OK
127.0.0.1:6380> keys *
1) "salary"
2) "set2"
3) "name"
4) "user1"
5) "java"
6) "set1"
7) "zhang3"
127.0.0.1:6380>
7.4、订阅
7.4.1、客户端操作
127.0.0.1:6380> subscribe publish1
Reading messages... (press Ctrl-C to quit)
1) "subscribe"
2) "publish1"
3) (integer) 1
1) "message"
2) "publish1"
3) "this is publish1 channel"
1) "message"
2) "publish1"
3) "this is publish2 channel"
7.4.2、服务端操作
127.0.0.1:6380> publish publish1 "this is publish1 channel"
(integer) 2
127.0.0.1:6380> publish publish1 "this is publish2 channel"
(integer) 2
7.5、将从库变为主库
slaveof no one
7.6、字符串键值
127.0.0.1:6380> set name 12345 设定一个值
OK
127.0.0.1:6380> get name 查看
"12345"
127.0.0.1:6380> type name 查看类型
string
127.0.0.1:6380> expire name 30 设置生存周期时间为30秒（时间可以任意设置）
(integer) 1
127.0.0.1:6380> ttl name 查看生存周期剩余的时间，当生存周期剩余的时间为负数的时候，值就会消失
(integer) 16
127.0.0.1:6380> set name ljx 设定一个值
OK
127.0.0.1:6380> get name 查看设定的值
"ljx"
127.0.0.1:6380> append name -beijing 给原先的值追加内容
(integer) 11
127.0.0.1:6380> get name 查看
"ljx-beijing"
127.0.0.1:6380> del name key 删除值
(integer) 2
127.0.0.1:6380> keys * 查看所有的值
(empty list or set)
7.7、hash键值
127.0.0.1:6380> hset user1 name ljx #设置hash键值
(integer) 1
127.0.0.1:6380> type user1 #查看类型
hash
127.0.0.1:6380> hget user1 name #查看值
"ljx"
127.0.0.1:6380> hset user1 age 24 #添加一个值
(integer) 1
127.0.0.1:6380> hgetall user1 #查看所有的hash值
1) "name"
2) "ljx"
3) "age"
4) "24"
127.0.0.1:6380> hget user1 age #查看age对应的值
"24"
7.8、创建集合类型的值
127.0.0.1:6380> sadd set1 "liujx" 123 "zhan3" "li4"
(integer) 4
127.0.0.1:6380> type set1
set
127.0.0.1:6380> smembers set1 #查看集合的值
1) "123"
2) "liujx"
3) "li4"
4) "zhan3"
127.0.0.1:6380> sadd set2 "liujx" 456 "wang5" #第二个集合
(integer) 3
127.0.0.1:6380> smembers set2 #查看集合
1) "wang5"
2) "liujx"
3) "456"
127.0.0.1:6380> sdiff set1 set2 #显示集合1和集合2的差集
1) "123"
2) "zhan3"
3) "li4"
127.0.0.1:6380> sunion set1 set2 #取两个集合的并集
1) "zhan3"
2) "li4"
3) "123"
4) "wang5"
5) "liujx"
6) "456"
二、python连接redis
1、安装依赖包
yum -y install python-pip （需要epel源）
pip install redis
python （登录python）
>>> import redis
>>> r = redis.StrictRedis(host='127.0.0.1',port=6382,db=0) （连接redis）
>>> r.get('name') #查看redis中的数据
2、设置一个键值
>>> r.set("python_test","python redis test case by ljx")
True
>>> r.get ("python_test") #查看
'python redis test case by ljx'
3、redis服务端查看
127.0.0.1:6382> get python_test
"python redis test case by ljx"