> > memcache.set() does not set if id already present. Huh? I don't see that in the documentation. Why do you think that it is true?
memcache.set is described as "Sets a key's value, regardless of previous contents in cache." memcache.add is described as "Sets a key's value, if and only if the item is not already in memcache." http://code.google.com/appengine/docs/python/memcache/functions.html On Feb 7, 1:32 pm, observer247 <prem...@gmail.com> wrote: > Thanks Eli ! The cache time was the issue. > > memcache.set() does not set if id already present. So I am using > delete and add. > I cannot be sure id is present, memcache could be deleted because of > memory pressure from app engine, right ? > > On Feb 7, 10:18 am, Eli Jones <eli.jo...@gmail.com> wrote: > > > > > One minor thing I noticed.. why not use memcache.set() instead of > > memcache.delete(), memcache.add()? > > > On Sun, Feb 7, 2010 at 6:22 AM, observer247 <prem...@gmail.com> wrote: > > > This is my code: > > > > ret = memcache.add(key=mykey, value=qList, time= > > > 60*60*24*30) > > > logging.critical("Created cache batch %s Passed %s" % > > > (mykey, str(ret))) > > > > qList = memcache.get(mykey) > > > > For some reason, qList is None ! I have logged all values and qList is > > > a non empty list. Check code below where I print a lot of info in the > > > logs. > > > > Detailed code here: > > > > def MY_QC_MAX(): return 3 > > > def MY_QC_SIZE(): return 200 > > > > def createBatchMyModels(): > > > import random > > > for n in range(MY_QC_MAX()): > > > bnum = n + 1 > > > mykey = "qkey_batch_"+str(bnum) > > > qQ = MyModel.all(keys_only=True).filter('approved', > > > True) > > > if bnum > 1: > > > qQ = qQ.filter('__key__ >', last_key) > > > rows = qQ.fetch(MY_QC_SIZE()) > > > tot = len(rows) > > > if tot < MY_QC_SIZE(): > > > logging.critical("Not enough MyModels for > > > batch %u, got %u" % (bnum, tot)) > > > if tot == 0: > > > return > > > last_key = rows[tot - 1] > > > # create the qList > > > qList = list() > > > logging.critical("Added %u rows into key %s" % (tot, > > > mykey)) > > > tmpc = 0 > > > for r in rows: > > > if tmpc == 0: > > > logging.critical("elem %u into key %s" > > > % (r.id(), mykey)) > > > tmpc = tmpc + 1 > > > qList.append(r.id()) > > > > for elem in qList: > > > logging.info("key %s elem is %u" % (mykey, > > > elem)) > > > memcache.delete(mykey) > > > ret = memcache.add(key=mykey, value=qList, time= > > > 60*60*24*30) > > > logging.critical("Created cache batch %s Passed %s" % > > > (mykey, str(ret))) > > > > qList = memcache.get(mykey) > > > if qList is None: > > > logging.critical(".. getNextMyModel: Did not > > > find key %s" % mykey) > > > else: > > > logging.critical(".. LEN : %u" % len(qList)) > > > > Sample log: > > > ..... > > > 02-07 03:15AM 05.240 key qkey_batch_1 elem is 13108 > > > C 02-07 03:15AM 05.250 Created cache batch qkey_batch_1 Passed True > > > C 02-07 03:15AM 05.253 .. getNextQuestion: Did not find key > > > qkey_batch_1 > > > C 02-07 03:15AM 05.339 Added 200 rows into key qkey_batch_2 > > > ... > > > > Can anyone pls help ! > > > > -- > > > You received this message because you are subscribed to the Google Groups > > > "Google App Engine" group. > > > To post to this group, send email to google-appeng...@googlegroups.com. > > > To unsubscribe from this group, send email to > > > google-appengine+unsubscr...@googlegroups.com<google-appengine%2Bunsubscrib > > > e...@googlegroups.com> > > > . > > > For more options, visit this group at > > >http://groups.google.com/group/google-appengine?hl=en.- Hide quoted text - > > - Show quoted text - -- You received this message because you are subscribed to the Google Groups "Google App Engine" group. To post to this group, send email to google-appeng...@googlegroups.com. To unsubscribe from this group, send email to google-appengine+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-appengine?hl=en.
