How do I store a fetched entity in memcache for App Engine?

Question

Because each new request in App Engine creates a new Handler, the entity I'd like to alter and put (using POST) has to be retrieved again. This seems wasteful, since I've populated the form with the information from GET a moment earlier.

How do I store a key, fetched entity, or key/entity pair in memcache for App Engine?

Here is a good memcache tutorial: http://blog.notdot.net/2009/9/Efficient-model-memcaching And for tipfy users, here is a good reference for using helper methods with memcache: http://www.tipfy.org/docs/api/tipfy.ext.db.html#tipfy.ext.db.get_entity_from_protobuf — Matt Norris, Aug 04 '10 at 01:03

score 3 · Accepted Answer · answered Aug 03 '10 at 01:29

From here:

def get_data():
    data = memcache.get("key")
    if data is not None:
        return data
    else:
        data = self.query_for_data()
        memcache.add("key", data, 60)
        return data

Memcache will store anything that is 'pickleable'.

You get access to memcache with the following import:

from google.appengine.api import memcache

score 0 · Answer 2 · answered Apr 06 '11 at 18:30

0

I've been developing a simple library that enables different storage layers for datastore entities, it allows you to fetch models from datastore,memcache or local instance. You can give it a try.

answered Apr 06 '11 at 18:30

Can Bascil

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How do I store a fetched entity in memcache for App Engine?

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