CODEWITHSUNDEEP
google-app-engine
dafeda
dafeda

Reputation: 1317

Does updating an objects property retrieved from memcache update the property in the datastore?

First, I retrieve an object from memcache:

player = memcache.get('%s' % id)

Then I update one of its properties:

player.score = newScore

I've done a bit of testing and it seems as it these two lines change the property player.score in my datastore. Now, I don't know much about memcache, but I do not expect this behavior.

Thanks.

Upvotes: 0

Views: 140

Answers (2)

Ibrahim Arief
Ibrahim Arief

Reputation: 9106

Since you are using Python, I think you are seeing the effect of NDB caching, specifically, the memcache-backed caching. So yes, the behavior is expected. Apparently not, since both the OP and the BDFL had said that the code is not using NDB.

Upvotes: 1

Stanislav Heller
Stanislav Heller

Reputation: 561

You want to save the changes after updating your player object, put it again to the datastore:

player.score = newScore
player.put()

Upvotes: 1

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