I'm trying to build a system where a shopkeeper can list promotional
items and mark their store on a map, so that anyone searching for
those items can find a place nearby that has a deal on them. The idea
is that a shopkeeper has just one store/identity, but they may have
multiple items, which I want searchable, so I'm using implicit
references, as it seems like a good way to go.
Here's my code for saving the sale. Ignore all the long/lat stuff;
that's a different conversation:
class SaveSale(webapp.RequestHandler):
def get(self):
address = cgi.escape(self.request.get('address'))
lattitude,longitude =
cgi.escape(self.request.get('point')).split(',')
wholeLat,decLat = lattitude.split('.')
mLat = wholeLat + decLat[0]
wholeLong,decLong = longitude.split('.')
mLon = wholeLong + decLong[0]
token = str(mLon)+','+str(mLat)
sale = SaleLocation(longitude = longitude,
lattitude = lattitude,
address = address,
region = token).put()
SaleItem(salelocation = sale,
name = 'itemName').put() # hard-coded for now, just for
testing purposes
self.response.headers['Content-Type'] = 'text/xml'
self.response.out.write('<response><note>Sale Saved</note></
response>')
If I take out that "SaleItem(...).put()" command, I get a very
reasonable average CPU reading of something like 300-400. With it in,
this save action immediately gets a CPU warning with values ranging
from 800 to well over 1000.
Gets are a lot lighter, so I'm not worried about the overall volume,
but I'm concerned that something that is ostensibly supported in the
documentation can't be done without a CPU warning. That warning says
the code should be optimized, but there's just not that much there to
optimize.
I realize that I could put this value in an array within the
SaleLocation object, or even in a comma delimited string in the
SaleLocation object, but that defeats the fairly elegant purpose of
the implicit link between these objects.
Is there a way to do things this way and reduce the CPU impact, or am
I screwed? Alternately, is the CPU meter screwed, in which case,
should I plunder forward, assuming it'll be fixed?
Best,
Ben
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