What are the methods for operating redis in python?
Python operates redis and uses connection pool:
redis-py uses connection pool to manage all connections to a redis server to avoid the overhead of establishing and releasing connections each time. By default, each Redis instance maintains its own connection pool. You can directly establish a connection pool and then use it as parameter Redis, so that multiple Redis instances can share a connection pool.
def getcoon():
pool = redis.ConnectionPool(host='192.168.25.126', port=6379, password='123456', db=0)
coon = redis.Redis(connection_pool=pool)
coon.set('key', 'value')
res = coon.get('key')
return rescoon.set('sea', 'hahhahaha', ex=30) # 过期时间单位s
set(name, value, ex=None, px=None, nx=False, xx=False) 在 Redis 中设置值，默认，不存在则创建，存在则修改。 参数： ex - 过期时间（秒） px - 过期时间（毫秒） nx - 如果设置为True，则只有name不存在时，当前set操作才执行 xx - 如果设置为True，则只有name存在时，当前set操作才执行
redis uses connection pool operation
class OPRedis(object):
def __init__(self):
if not hasattr(OPRedis, 'pool'):
OPRedis.getRedisCoon() #创建redis连接
self.coon = redis.Redis(connection_pool=OPRedis.pool)
@staticmethod
def getRedisCoon():
OPRedis.pool = redis.ConnectionPool(host=redisInfo['host'], password=redisInfo['password'], port=redisInfo['port'], db=redisInfo['db'])
"""
string类型 {'key':'value'} redis操作
"""
def setredis(self, key, value, time=None):
#非空即真非0即真
if time:
res = self.coon.setex(key, value, time)
else:
res = self.coon.set(key, value)
return res
def getRedis(self, key):
res = self.coon.get(key).decode()
return res
def delRedis(self, key):
res = self.coon.delete(key)
return res
"""
hash类型，{'name':{'key':'value'}} redis操作
"""
def setHashRedis(self, name, key, value):
res = self.coon.hset(name, key, value)
return res
def getHashRedis(self, name, key=None):
# 判断key是否我为空，不为空，获取指定name内的某个key的value; 为空则获取name对应的所有value
if key:
res = self.coon.hget(name, key)
else:
res = self.coon.hgetall(name)
return res
def delHashRedis(self, name, key=None):
if key:
res = self.coon.hdel(name, key)
else:
res = self.coon.delete(name)
return resredisInfo configuration
redisInfo = {
"host": '192.168.1.112',
"password": '123456',
"port": 6379,
"db": 0
}The above is the detailed content of What are the methods for operating redis in python?. For more information, please follow other related articles on the PHP Chinese website!
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