Memcache 输出空值
Memcache Outputting Null Value
我正在尝试实现 Google 文档 Memcache Examples, so that I can pass it to a dictionary but I am getting a null
value. I've researched for solutions, for example, Google App Engine retrieving null values from memcache 中的伪代码,但它们没有帮助。
如何让 the_id
的输出缓存 500 秒并返回供 update_dict
函数使用?我做错了什么?
代码:
def return_id(self):
the_id = str(uuid.uuid1())
data = memcache.get(the_id)
print data
if data is not None:
return data
else:
memcache.add(the_id, the_id, 500)
return data
def update_dict(self):
....
id = self.return_id()
info = {
'id': id,
'time': time
}
info_dump = json.dumps(info)
return info_dump
输出:
{"id": null, "time": "1506437063"}
此问题已解决。问题是:
- 我的密钥没有正确的字符串名称
'the_id'
- 我没有在 else 语句中传递数据
解法:
....
the_id = str(uuid.uuid1())
data = memcache.get('the_id') #fix: pass a string for the key name
print data
if data is not None:
return data
else:
data = the_id #fix: added the object that needed to be passed to data
memcache.add('the_id', the_id, 500)
return data
....
输出:
{"id": "25d853ee-a47d-11e7-8700-69aedf15b2da", "time": "1506437063"}
{"id": "25d853ee-a47d-11e7-8700-69aedf15b2da", "time": "1506437063"}
我正在尝试实现 Google 文档 Memcache Examples, so that I can pass it to a dictionary but I am getting a null
value. I've researched for solutions, for example, Google App Engine retrieving null values from memcache 中的伪代码,但它们没有帮助。
如何让 the_id
的输出缓存 500 秒并返回供 update_dict
函数使用?我做错了什么?
代码:
def return_id(self):
the_id = str(uuid.uuid1())
data = memcache.get(the_id)
print data
if data is not None:
return data
else:
memcache.add(the_id, the_id, 500)
return data
def update_dict(self):
....
id = self.return_id()
info = {
'id': id,
'time': time
}
info_dump = json.dumps(info)
return info_dump
输出:
{"id": null, "time": "1506437063"}
此问题已解决。问题是:
- 我的密钥没有正确的字符串名称
'the_id'
- 我没有在 else 语句中传递数据
解法:
....
the_id = str(uuid.uuid1())
data = memcache.get('the_id') #fix: pass a string for the key name
print data
if data is not None:
return data
else:
data = the_id #fix: added the object that needed to be passed to data
memcache.add('the_id', the_id, 500)
return data
....
输出:
{"id": "25d853ee-a47d-11e7-8700-69aedf15b2da", "time": "1506437063"}
{"id": "25d853ee-a47d-11e7-8700-69aedf15b2da", "time": "1506437063"}