redis01安装

初始

# 安装yum扩展源
[root@localhost ~]# yum install epel* -y  
# 安装redis
[root@localhost ~]# yum install redis net-tools -y

# 配置系统参数
[root@localhost ~]# echo never > /sys/kernel/mm/transparent_hugepage/enabled
[root@localhost ~]# echo "echo never > /sys/kernel/mm/transparent_hugepage/enabled" >> /etc/rc.local
[root@localhost ~]# echo "vm.overcommit_memory = 1" >> /etc/sysctl.conf
[root@localhost ~]# sysctl -p
[root@localhost ~]# echo 2048 > /proc/sys/net/core/somaxconn
[root@localhost ~]# echo "net.core.somaxconn = 2048" >> /etc/sysctl.conf
[root@localhost ~]# echo "* soft nofile 10240" >> /etc/security/limits.conf 
[root@localhost ~]# echo "* hard nofile 10240" >> /etc/security/limits.conf 
[root@localhost ~]# echo "* soft nproc 10240" >> /etc/security/limits.conf 
[root@localhost ~]# echo "* hard nproc 10240" >> /etc/security/limits.conf 
[root@localhost ~]# ulimit -n 10240
[root@localhost ~]# ulimit -u 10240

# 修改服务监听地址(默认是: 127.0.0.1  改为 0.0.0.0)
[root@localhost ~]# sed -i 's/^bind\(.*\)/bind 0.0.0.0/g' /etc/redis.conf 

# 将redis加入到开机自启动
[root@localhost ~]# systemctl enable redis

# 启动redis
[root@localhost ~]# systemctl start redis

配置文件

默认： /etc/redis.conf
自定义: redis-server /path/to/redis.conf

多数据库

Redis默认支持16个数据库，可以通过配置参数databases来修改这一数据，redis-cli客户端命令工具连接上redis服务器之后默认会自动选择第0个数据库。数据库以数字序列进行编制，如果想切换到第1个数据库只需要select 1即可。

# 连接到redis
[root@localhost ~]# redis-cli
# 查看当前redis最大支持多少个数据库
127.0.0.1:6379> config get databases
1) "databases"
2) "16"

# 默认连接的数据库是0，并且redis没有提供命令来查看当前我们选择的是哪个数据库。
127.0.0.1:6379> set name "zhengtong"
OK
127.0.0.1:6379> set work_at "shanghai"
OK

# 查看当前数据库所有的key。
127.0.0.1:6379> keys *
1) "name"
2) "work_at"

# 切换到数据库1
127.0.0.1:6379> select 1
OK

# 查看数据库1中的所有的key。
127.0.0.1:6379> keys *
(empty list or set)

# 切换回数据库0
127.0.0.1:6379> select 0
OK

# 查看数据库0中的所有的key。
127.0.0.1:6379> keys *
1) "name"
2) "work_at"

 
 
 
 

数据类型

Strings / 字符串类型命令(24)

•   |-            | -        | -        | -        | - 
  

--- |--- | --- | --- | --- | ---
APPEND | BITCOUNT | BITFIELD | BITOP | BITPOS | DECR
DECRBY | GET | GETBIT | GETRANGE | GETSET | INCR
INCRBY | INCRBYFLOAT | MGET | MSET | MSETNX | PSETEX
SET | SETBIT | SETEX | SETNX | SETRANGE | STRLEN

Lists / 列表类型命令(23)

•   |-       | -          | -       | -        | - 
  

--- |--- | --- | --- | --- | ---
BLPOP | BRPOP | BRPOPLPUSH | LINDEX | LINSERT | LLEN
LPOP | LPUSH | LPUSHX | LRANGE | LREM | LSET
LTRIM | RPOP | RPOPLPUSH | RPUSH | RPUSHX |

Hashes / 散列类型命令(15)

•   |-        | -     | -       | -        | - 
  

--- |--- | --- | --- | --- | ---
HDEL | HEXISTS | HGET | HGETALL | HINCRBY | HINCRBYFLOAT
HKEYS | HLEN | HMGET | HMSET | HSCAN | HSET
HSETNX | HSTRLEN | HVALS |

Sets / 集合类型命令(14)

•       |-          | -        | -           | - 
  

--- |--- | --- | --- | ---
SADD | SCARD | SDIFF | SDIFFSTORE | SINTER
SINTERSTORE | SISMEMBER | SMEMBERS | SMOVE | SPOP
SRANDMEMBER | SREMSSCAN | SUNION | SUNIONSTORE |

Sorted Sets / 有序集合类型命令(21)

•           |-                 | -      | -        
  

--- |--- | --- | ---
ZADD | ZCARD | ZCOUNT | ZINCRBY
ZINTERSTORE | ZLEXCOUNT | ZRANGE | ZRANGEBYLEX
ZRANGEBYSCORE | ZRANK | ZREM | ZREMRANGEBYLEX
ZREMRANGEBYRANK | ZREMRANGEBYSCORE | ZSCAN | ZREVRANGEBYLEX
ZREVRANGE | ZREVRANGEBYSCORE | ZSCORE | ZREVRANK
ZUNIONSTORE |

 
 
 
 

其他

Keys / 关键字命令(24)

•   |-          | -      | -        | -        | - 
  

--- |--- | --- | --- | --- | ---
DEL | DUMP | EXISTS | EXPIRE | EXPIREAT | KEYS
MIGRATE | MOVE | OBJECT | PERSIST | PEXPIRE | PEXPIREAT
PTTL | RANDOMKEY | RENAME | RENAMENX | RESTORE | SCAN
SORT | TOUCH | TTL | TYPE | UNLINK | WAIT

Server / 服务分析工具命令 (31)

•           |-                 | -              | -        
  

--- |--- | --- | ---
BGREWRITEAOF | CLIENT GETNAME | FLUSHALL | COMMAND
BGSAVE | CLIENT KILL | FLUSHDB | COMMAND COUNT
SAVE | CLIENT LIST | INFO | COMMAND GETKEYS
SHUTDOWN | CLIENT PAUSE | LASTSAVE | COMMAND INFO
SLAVEOF | CLIENT REPLY | MONITOR | CONFIG GET
SLOWLOG | CLIENT SETNAME | DBSIZE | CONFIG RESETSTAT
SYNC | ROLE | DEBUG OBJECT | CONFIG REWRITE
TIME | - | DEBUG SEGFAULT | CONFIG SET

Connection / 连接工具命令 (6)

•   |-          | -      | -        | -        | - 
  

--- |--- | --- | --- | --- | ---
AUTH | ECHO | PING | QUIT | SELECT | SWAPDB

Transactions / 事务处理命令

•      |-          | -       | -           | -       
  

--- |--- | --- | --- | ---
DISCARD | EXEC | MULTI | UNWATCH | WATCH

 
 

参考

• [x] 书籍： Redis 入门指南
• [x] 官网： Strings 命令集