redis python操作api

redis单例数据库

#redis单例连接
'''
redis-server redis_diy.conf
'''
import redis
conn=redis.StrictRedis(host='192.168.160.135',port='6380',db=0,password='123456')#redis配置文件，db指定redis数据库的隔离区，有0-15共16个，默认为0
print(conn.dbsize())
print(conn.keys())
conn.set('age',18)
print(conn.keys())
print(conn.get('name'))
print(conn.exists('name'))

redis-sentinel（哨兵）

#redis-sentinel连接
'''
启动redis服务端(6390主库)：
    redis-server msconf/redis-6390.conf
    redis-server msconf/redis-6391.conf
    redis-server msconf/redis-6392.conf
    redis-server msconf/redis-6393.conf
启动哨兵功能：
    redis-sentinel redis_sentinel/redis-sentinel_26390.conf
    redis-sentinel redis_sentinel/redis-sentinel_26391.conf
    redis-sentinel redis_sentinel/redis-sentinel_26392.conf
'''

## 导入redis sentinel包
from redis.sentinel import Sentinel
#指定sentinel的地址和端口号（连接哨兵）
sentinel=Sentinel([('192.168.160.135',26390),('192.168.160.135',26391),('192.168.160.135',26392)],socket_timeout=0.1)
#测试，获取以下主库和从库的信息：mymaster是哨兵配置文件中的指定的监控主库
print(sentinel.discover_master('mymaster'))#主库信息
print(sentinel.discover_slaves('mymaster'))#从库信息

##配置读写分离
#写节点：主库
master=sentinel.master_for('mymaster',password=123456,socket_timeout=0.1)#注意主库设置了安全模式有密码
print(master)
#读节点:从库
slave=sentinel.slave_for('mymaster',password=123456,socket_timeout=0.1)#注意从库设置了安全模式有密码
print(slave)

#读写分离测试
print(master.dbsize())
print(master.keys())
print(slave.keys())
master.set('name4',4)
print(slave.keys())
print(slave.get('name4'))

redis-cluster(集群)

# redis-cluster集群:https://github.com/Grokzen/redis-py-cluster
# pip install redis-py-cluster
from rediscluster import StrictRedisCluster
#是少要链接集群中的一台数据库，可以是多台，防止有的数据库会挂掉
startup_nodes = [{"host": "192.168.160.135", "port": "7000"}, {"host": "192.168.160.135", "port": "7001"},
                 {"host": "192.168.160.135", "port": "7002"}, {"host": "192.168.160.135", "port": "7003"},
                 {"host": "192.168.160.135", "port": "7004"}, {"host": "192.168.160.135", "port": "7005"} ]
rc = StrictRedisCluster(startup_nodes=startup_nodes,password=123456, decode_responses=True)
rc.set('name1',1234)
print(rc.keys())
print(rc.dbsize())
print(rc.get('name1'))