redis python操作api

redis单例数据库

 1 #redis单例连接
 2 '''
 3 redis-server redis_diy.conf
 4 '''
 5 import redis
 6 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
 7 print(conn.dbsize())
 8 print(conn.keys())
 9 conn.set('age',18)
10 print(conn.keys())
11 print(conn.get('name'))
12 print(conn.exists('name'))

redis单例数据库

redis-sentinel（哨兵）

 1 #redis-sentinel连接
 2 '''
 3 启动redis服务端(6390主库)：
 4     redis-server msconf/redis-6390.conf
 5     redis-server msconf/redis-6391.conf
 6     redis-server msconf/redis-6392.conf
 7     redis-server msconf/redis-6393.conf
 8 启动哨兵功能：
 9     redis-sentinel redis_sentinel/redis-sentinel_26390.conf
10     redis-sentinel redis_sentinel/redis-sentinel_26391.conf
11     redis-sentinel redis_sentinel/redis-sentinel_26392.conf
12 '''
13 
14 ## 导入redis sentinel包
15 from redis.sentinel import Sentinel
16 #指定sentinel的地址和端口号（连接哨兵）
17 sentinel=Sentinel([('192.168.160.135',26390),('192.168.160.135',26391),('192.168.160.135',26392)],socket_timeout=0.1)
18 #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
19 print(sentinel.discover_master('mymaster'))#主库信息
20 print(sentinel.discover_slaves('mymaster'))#从库信息
21 
22 ##配置读写分离
23 #写节点：主库
24 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
25 print(master)
26 #读节点:从库
27 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
28 print(slave)
29 
30 #读写分离测试
31 print(master.dbsize())
32 print(master.keys())
33 print(slave.keys())
34 master.set('name4',4)
35 print(slave.keys())
36 print(slave.get('name4'))

redis-sentinel（哨兵）

redis-cluster(集群)

 1 # redis-cluster集群:https://github.com/Grokzen/redis-py-cluster
 2 # pip install redis-py-cluster
 3 from rediscluster import StrictRedisCluster
 4 #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
 5 startup_nodes = [{"host": "192.168.160.135", "port": "7000"}, {"host": "192.168.160.135", "port": "7001"},
 6                  {"host": "192.168.160.135", "port": "7002"}, {"host": "192.168.160.135", "port": "7003"},
 7                  {"host": "192.168.160.135", "port": "7004"}, {"host": "192.168.160.135", "port": "7005"} ]
 8 rc = StrictRedisCluster(startup_nodes=startup_nodes,password=123456, decode_responses=True)
 9 rc.set('name1',1234)
10 print(rc.keys())
11 print(rc.dbsize())
12 print(rc.get('name1'))

redis-cluster(集群)