Python使用redispool的单例实现方式介绍

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')