Python使用redis pool的一种单例实现方式
本文实例讲述了Python使用redis pool的一种单例实现方式。分享给大家供大家参考，具体如下：
为适应多个redis实例共享同一个连接池的场景，可以类似于以下单例方式实现:
import redis
class RedisDBConfig:
HOST = '127.0.0.1'
PORT = 6379
DBID = 0
def operator_status(func):
'''''get operatoration status
'''
def gen_status(*args, **kwargs):
error, result = None, None
try:
result = func(*args, **kwargs)
except Exception as e:
error = str(e)
return {'result': result, 'error': error}
return gen_status
class RedisCache(object):
def __init__(self):
if not hasattr(RedisCache, 'pool'):
RedisCache.create_pool()
self._connection = redis.Redis(connection_pool = RedisCache.pool)
@staticmethod
def create_pool():
RedisCache.pool = redis.ConnectionPool(
host = RedisDBConfig.HOST,
port = RedisDBConfig.PORT,
db = RedisDBConfig.DBID)
@operator_status
def set_data(self, key, value):
'''''set data with (key, value)
'''
return self._connection.set(key, value)
@operator_status
def get_data(self, key):
'''''get data by key
'''
return self._connection.get(key)
@operator_status
def del_data(self, key):
'''''delete cache by key
'''
return self._connection.delete(key)
if __name__ == '__main__':
print RedisCache().set_data('Testkey', "Simple Test")
print RedisCache().get_data('Testkey')
print RedisCache().del_data('Testkey')
print RedisCache().get_data('Testkey')
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希望本文所述对大家Python程序设计有所帮助。