[google-appengine] Process pdf which is stored in the blobstore

2012-03-08 Thread conman
Hi,

is it possible to read a pdf file which previously has been stored in the 
blobstore?

I would like to get the number of pages and perhaps the word count of the 
document.

With pyPdf this is possible, but how do I let pyPdf read in the blobstore?

Thanks for your help!
Constantin

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[google-appengine] Re: Do version changes affect my cron job scheduling?

2010-04-12 Thread conman
You let it seem like a well known feature of app engine - but to me it
is more or less surprising behaviour, so I would rather call it a
bug :)
But thanks for your reply, I will then fix my jobs by assigning them
to a specific time of the day.

On 11 Apr., 17:24, djidjadji djidja...@gmail.com wrote:
 It is a 'known fact that the cron job times are reset when you upload
 a new version.
 If you tell it every 24 hours and within 24 hours you do another
 upload no cron job is called.
 Better is to specify a time of day to run the job every day 00:00

 2010/4/11 conman constantin.christm...@googlemail.com:

  I am not sure why that is, but I have the feeling that app engine cron
  jobs are not totally reliable. I have 3 cron jobs scheduled at every
  24 hours but a some days they are run and at some days they are not
  run at all.

  And If they are run the time of execution is not predictable (at least
  for me) - I mean I would expect the jobs to be run around the same
  time every day...?

  Could that be related to updates I make to my application? So maybe
  the scheduler of the jobs is set back to 24 houres if I upload a new
  version of my app??

  Thanks
  Constantin

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[google-appengine] Do version changes affect my cron job scheduling?

2010-04-11 Thread conman
I am not sure why that is, but I have the feeling that app engine cron
jobs are not totally reliable. I have 3 cron jobs scheduled at every
24 hours but a some days they are run and at some days they are not
run at all.

And If they are run the time of execution is not predictable (at least
for me) - I mean I would expect the jobs to be run around the same
time every day...?

Could that be related to updates I make to my application? So maybe
the scheduler of the jobs is set back to 24 houres if I upload a new
version of my app??

Thanks
Constantin

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[google-appengine] How many taks can be created within one request?

2010-04-06 Thread conman
How long does it take to create task?

In the docs it is suggested to create one task for each email to send
out (in case of the mass email scenario).
So if I have a list with 10.000 subscribers and I want to inform them
all, then I would have to create 10.000 tasks.
But how many taks can be created within the limitations of one request
without getting timed out?

Does here exist a rule of thumb?

Thanks!
Constantin

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[google-appengine] Re: How many taks can be created within one request?

2010-04-06 Thread conman
Hi Ikai,

thanks for your reply. I will look into AppStats for performance
measurement.
Regarding the optimal solution you suggested I must say that it seems
to make the application code verry hard to understand and maintain.

I would really like google to drop the timeout restriction for running
tasks, so I could create one task which then performs the sending of
all mails... this would be much more straight forward!

Cheers,
Constantin


On 6 Apr., 18:57, Ikai L (Google) ika...@google.com wrote:
 Have you run AppStats yet? It shouldn't take too long, but tasks do have to
 be stored somewhere, so there is a cost. The optimal solution is likely a
 hierarchical tree of task creation (1000s, then 100s, then 10s).

 On Tue, Apr 6, 2010 at 2:01 AM, conman constantin.christm...@googlemail.com





  wrote:
  How long does it take to create task?

  In the docs it is suggested to create one task for each email to send
  out (in case of the mass email scenario).
  So if I have a list with 10.000 subscribers and I want to inform them
  all, then I would have to create 10.000 tasks.
  But how many taks can be created within the limitations of one request
  without getting timed out?

  Does here exist a rule of thumb?

  Thanks!
  Constantin

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 Enginehttp://googleappengine.blogspot.com|http://twitter.com/app_engine

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[google-appengine] Does the Request Timout still exist

2010-04-02 Thread conman
I searched the docs but didn't find something about the request
timout.

The last time I read something about (around Feb 09) it it was at max.
30 sec per request.

Does this limitation still exist? I mean with the introduction of cron
jobs inside GAE this limitation should have been dropped... or are the
cron jobs intended to be of very high granularity?

If it's the case that requests can run as long as they want, how can
one abort requests that are hang up (for example due to a programming
mistake)?

Cheers,
Constantin

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[google-appengine] Re: Offline?

2009-07-02 Thread conman

same for me

On 2 Jul., 17:30, bruno.braga bruno.br...@gmail.com wrote:
 And this is the attempt to open the dashboard:

 http://lh3.ggpht.com/_A7V9t45pMLU/SkzRNkvwu0I/TE4/zryzVNPq1Ck...
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[google-appengine] Re: Free Quoata Reduction?

2009-06-23 Thread conman

Why didn't they send out a notification about that... don't like it to
see that happen, but at least I would like to become informed.

The free 5 Mio PI claim from launch last year is now history for
sure - at least for my application.

Cheers,
Constantin




On 23 Jun., 09:17, jianwen kenvin.hu...@gmail.com wrote:
 I also noticed that. The free CPU hours now reduce to 6.50 per day,
 and Outgoing/Incoming Bandwidth reduce to 1GB per day.

 On Jun 23, 2:43 pm, conman constantin.christm...@googlemail.com
 wrote:

  Hi,

  I just looked at the dashboard and saw that nearly one third of my
  free CPU quoata has been used up for today.

  How can that be, because my app didn't do significantly more than the
  other day when I looked last (I guess it was end of last week)

  Is this a known monitoring issue or was there again a quota adjustment
  as in february?

  Cheers,
  Constantin
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[google-appengine] Re: Free Quoata Reduction?

2009-06-23 Thread conman

Ah, ok, then this was the reduction that has beeen announced in
februrary.

Tx

On 23 Jun., 10:04, Sylvain sylvain.viv...@gmail.com wrote:
 It was announced since many months (here and the blog)

 http://code.google.com/intl/fr/appengine/docs/quotas.htmlhttp://googleappengine.blogspot.com/2009/02/new-grow-your-app-beyond-...

 On 23 juin, 09:30, conman constantin.christm...@googlemail.com
 wrote:

  Why didn't they send out a notification about that... don't like it to
  see that happen, but at least I would like to become informed.

  The free 5 Mio PI claim from launch last year is now history for
  sure - at least for my application.

  Cheers,
  Constantin

  On 23 Jun., 09:17, jianwen kenvin.hu...@gmail.com wrote:

   I also noticed that. The free CPU hours now reduce to 6.50 per day,
   and Outgoing/Incoming Bandwidth reduce to 1GB per day.

   On Jun 23, 2:43 pm, conman constantin.christm...@googlemail.com
   wrote:

Hi,

I just looked at the dashboard and saw that nearly one third of my
free CPU quoata has been used up for today.

How can that be, because my app didn't do significantly more than the
other day when I looked last (I guess it was end of last week)

Is this a known monitoring issue or was there again a quota adjustment
as in february?

Cheers,
Constantin
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[google-appengine] AppEngine and Google Base API

2009-05-12 Thread conman

Hello,

I am thinkting about using Google Base API to establish keyword based
search for my application.

After reading through the docs I am pretty sure this could work out
quite well :)

Does anyone have experience in that field? Is it the right appoach to
use Google Base like that (I know that's not the correct syntax):

item RelatedMedia
  keywordsSummer, Sand, Beach, Sea/keywords
 keyhdk383kadj93ujdkl/key
/item

I want to query for one or more keywords which would give me matching
items.
The attribute key is the DataStore key for the actual media object I
want to present the user.

Furthermore I am confused how to establish authentication so my web
application can  insert/edit or delete items inside Google Base.

If I understand correctly I need to gather a request token via OAuth
or AuthSub and use this to
to to either make one request or to to gather a session token for some
more requests.
This makes sense if my application would access personal data like a
calendar or docs - but I want to store/retrieve only application data.

How can I prevent my application from authenticating all the time?
Isn't there something like an application-key to authenticate valid
requests (similar to Amazon-Database-Requests).
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[google-appengine] Re: GAE Team, How does the import cache work? How do we reduce custom django overhead?

2009-02-10 Thread conman

I am not quite sure, but it seems to me the zipimport/loading of our
app is only a problem in the early evening (Germany)/forenoon PST
It's now 8:00 am PST and our app failes serving - just on time as it
was the days before.

It's not that we get more traffic/less traffic at this time of the
day.

When accessing our app at this time it is reacting really slow and
starts serving 500 errors.

After some hours it gets better and approx. 3-4 h later it works like
a charm again.
Are there backups scripts running at that time of the day??

We are using django 1.0 via app engine patch - btw: great work
Waldemar!


On 10 Feb., 14:09, Waldemar Kornewald wkornew...@gmail.com wrote:
 Hi Dan,

 On Feb 10, 5:05 am, Dan Sanderson dansander...@google.com wrote:

  As for bundling Django, we plan to upgrade the bundled Django with the next
  major version of the Python runtime environment.  Upgrading Django 0.96 to
  1.0 in place does not meet our criteria for a backwards compatible change,
  and so cannot happen without a major version bump.

 It's not really a pratical solution to have an unpatched Django
 release which gets monkey-patched. The django-helper's monkey-patching
 technique works at a small scale, but if you need the admin interface
 and the other interesting Django features you have to stay compatible
 with very specific implementation details (this can even happen for
 minor features), so even upgrading between API-compatible bugfix
 releases (Django 1.0 = 1.0.2) could break at least django-helper
 which means you break a whole website. Thus, you couldn't even provide
 bugfix releases without introducing a new API version.

 I can see only two practical options:

 1. Remove Django from App Engine and let everyone take care of
 installing it, manually. That's what most of us already do. We just
 need a solution for the request timeouts, but maybe they're related to
 the zipimport bug which finally got identified?

 2. Patch Django in-place and bundle the pre-patched version with App
 Engine, so we get a real Django port. This is only acceptable if you
 support almost all of Django's features, including the admin
 interface. Even better, Django 1.2 or 1.3 might come with support for
 query backends, so it could be possible to provide a backend that
 makes Django's Model class compatible with App Engine. I've started
 documenting the high-level changes 
 here:http://code.djangoproject.com/wiki/AppEngine
 The discussion is 
 here:http://groups.google.com/group/django-developers/browse_thread/thread...

 Maybe I missed something. What plan did you have?

 Bye,
 Waldemar Kornewald
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[google-appengine] Re: Again *major* server errors of app engine!

2009-02-09 Thread conman

No, I don't understand why the app has problems loading django at some
specific times of the day...

Today everything seems normal but I don't have a good feeling if the
source of the error is not clear and so it may still exist.

Maybe someone of google can shed some light into that??

Regards,
Constantin

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[google-appengine] Re: Again *major* server errors of app engine!

2009-02-08 Thread conman

Davel63, are you also using appengine patch?


On 8 Feb., 04:48, Devel63 danstic...@gmail.com wrote:
 We see the same thing, and just converted to Django.  Sounds like it
 may be related to Django.

 On Feb 7, 11:09 am, johnP j...@thinkwave.com wrote:

  No solution - just gathering information.  Looking more closely at the
  logs where the errors occur, the deadline exceeded pops up somewhere
  while loading and patching django.  This started a couple days ago.
  Maybe it'll go away?

  Oh well - I'm gonna enjoy the rest of the weekend, and will come back
  to this on Monday.  :)

  johnP

  On Feb 7, 10:59 am, conman constantin.christm...@googlemail.com
  wrote:

   Yea, I am using appengine patch too and in my logs are a lot deadline
   exceeded errors which result from
   request on very simple pages without any datastore operations.

   But what's the problem? I have the feeling app engine is lagging at
   this time of the day but that may be a oversimplification...
   What's your solution to that problem - or are you just igoring it?

   Constantin

   On 7 Feb., 19:37, johnP j...@thinkwave.com wrote:

I saw similar issues (with a google-issued, non-customized 500
deadline exceeded error).  I'm using appengine patch, and saw a large
increase in zipimporter calls.  It seemed like a large number of
requests were reloading the entire Django environment (and maybe doing
so more slowly than usual...) which resulted in periodic deadline
exceeded errors on very simple pages.    Sound possible?

johnP

On Feb 7, 9:29 am, conman constantin.christm...@googlemail.com
wrote:

 It's happening again!!

 Our site is not accessible but instead showing a google 500 server
 error page!!!

 The whole day everything worked normal but in the early evening
 (Germany/Europe) or forenoon (PST) the serving of the site is broken
 again - and I definitively didn't change anything today!

 Yesterday at the same time of the day app engine had the exact same
 problem:http://groups.google.com/group/google-appengine/browse_thread/thread/...

 What's up with that and where can I report this error so someone at
 google will look into that?

 Regards,
 Constantin
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[google-appengine] Re: Again *major* server errors of app engine!

2009-02-08 Thread conman

And why occurres the error only at some time of the day?

On 8 Feb., 18:21, Mike Wesner m...@konsole.net wrote:
 I think our app was running into this issue also.

 We are using our own django and parts of the appengine helper patch.
 I would see 500 errors, deadlineexceeded but the exception is thrown
 in the django, helper or pyamf (in our case we use pyamf to process
 the requests from a flex/flash client) code which was even before any
 datastore operations or much else ran.

 The question is.  How do you set it up so that django/helper are
 cached imports?

 If you import things in main.py (where our main method is) does that
 keep things in memory?

 The docs seem to be pretty light on details about how to do this.

 -Mike

 On Feb 8, 3:19 am, conman constantin.christm...@googlemail.com
 wrote:

  Davel63, are you also using appengine patch?

  On 8 Feb., 04:48, Devel63 danstic...@gmail.com wrote:

   We see the same thing, and just converted to Django.  Sounds like it
   may be related to Django.

   On Feb 7, 11:09 am, johnP j...@thinkwave.com wrote:

No solution - just gathering information.  Looking more closely at the
logs where the errors occur, the deadline exceeded pops up somewhere
while loading and patching django.  This started a couple days ago.
Maybe it'll go away?

Oh well - I'm gonna enjoy the rest of the weekend, and will come back
to this on Monday.  :)

johnP

On Feb 7, 10:59 am, conman constantin.christm...@googlemail.com
wrote:

 Yea, I am using appengine patch too and in my logs are a lot deadline
 exceeded errors which result from
 request on very simple pages without any datastore operations.

 But what's the problem? I have the feeling app engine is lagging at
 this time of the day but that may be a oversimplification...
 What's your solution to that problem - or are you just igoring it?

 Constantin

 On 7 Feb., 19:37, johnP j...@thinkwave.com wrote:

  I saw similar issues (with a google-issued, non-customized 500
  deadline exceeded error).  I'm using appengine patch, and saw a 
  large
  increase in zipimporter calls.  It seemed like a large number of
  requests were reloading the entire Django environment (and maybe 
  doing
  so more slowly than usual...) which resulted in periodic deadline
  exceeded errors on very simple pages.    Sound possible?

  johnP

  On Feb 7, 9:29 am, conman constantin.christm...@googlemail.com
  wrote:

   It's happening again!!

   Our site is not accessible but instead showing a google 500 server
   error page!!!

   The whole day everything worked normal but in the early evening
   (Germany/Europe) or forenoon (PST) the serving of the site is 
   broken
   again - and I definitively didn't change anything today!

   Yesterday at the same time of the day app engine had the exact 
   same
   problem:http://groups.google.com/group/google-appengine/browse_thread/thread/...

   What's up with that and where can I report this error so someone 
   at
   google will look into that?

   Regards,
   Constantin
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[google-appengine] Re: App engine problems

2009-02-07 Thread conman

This is not the 500 page of our app. The reported problems resulted in
a 500 page of the google service.
So actually we cannot 'design the app to not do that' :)

Regards,
Constantin
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[google-appengine] Re: App engine problems

2009-02-07 Thread conman

The error report on
http://code.google.com/status/appengine/detail/serving/2009/02/06#ae-trust-detail-helloworld-get-latency
from yesterday 11:00 am talks about a memcache problem which 'didn't
affect the perfomance or uptime of applications'

I hope this problem was the reason for the heavy error rate of our
application but then this statement is not quite true!

But most importantly the problem seems to be solved and everything is
back to normal :)

Regards,
Constantin
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[google-appengine] Again *major* server errors of app engine!

2009-02-07 Thread conman

It's happening again!!

Our site is not accessible but instead showing a google 500 server
error page!!!

The whole day everything worked normal but in the early evening
(Germany/Europe) or forenoon (PST) the serving of the site is broken
again - and I definitively didn't change anything today!

Yesterday at the same time of the day app engine had the exact same
problem:
http://groups.google.com/group/google-appengine/browse_thread/thread/4964daf12c05cd2b

What's up with that and where can I report this error so someone at
google will look into that?

Regards,
Constantin
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[google-appengine] Re: Again *major* server errors of app engine!

2009-02-07 Thread conman

Yea, I am using appengine patch too and in my logs are a lot deadline
exceeded errors which result from
request on very simple pages without any datastore operations.

But what's the problem? I have the feeling app engine is lagging at
this time of the day but that may be a oversimplification...
What's your solution to that problem - or are you just igoring it?

Constantin

On 7 Feb., 19:37, johnP j...@thinkwave.com wrote:
 I saw similar issues (with a google-issued, non-customized 500
 deadline exceeded error).  I'm using appengine patch, and saw a large
 increase in zipimporter calls.  It seemed like a large number of
 requests were reloading the entire Django environment (and maybe doing
 so more slowly than usual...) which resulted in periodic deadline
 exceeded errors on very simple pages.    Sound possible?

 johnP

 On Feb 7, 9:29 am, conman constantin.christm...@googlemail.com
 wrote:

  It's happening again!!

  Our site is not accessible but instead showing a google 500 server
  error page!!!

  The whole day everything worked normal but in the early evening
  (Germany/Europe) or forenoon (PST) the serving of the site is broken
  again - and I definitively didn't change anything today!

  Yesterday at the same time of the day app engine had the exact same
  problem:http://groups.google.com/group/google-appengine/browse_thread/thread/...

  What's up with that and where can I report this error so someone at
  google will look into that?

  Regards,
  Constantin
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[google-appengine] Re: App engine problems

2009-02-06 Thread conman

Hi Marzia,

 There have been periods this morning with higher than average serving
 latency, but so far this is all we have seen:

I am pretty sure there was something wrong. I am sitting in Europe,
maybe that's the reason...

But I tested my site multiple times with
http://www.hyperspin.com/
which tests site accessibility from multiple locations round the
world.

Around 8:00 am PST it reported 500 errors from everywhere around the
world, sometimes one or two locations worked ok but the next time I
tried I got an error again.

Now I checked our site again and everything seems quite normal.

It's making me nervous that we (or at least I) are experiencing
*major* problems and there seems to be no explanation for this.

Maybe someone can look into that to make sure it doesn't happen again?

Regards,
Constantin






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[google-appengine] Re: How-To Do Paging on App Engine

2009-01-27 Thread conman

yes, you are right, this is even better :)

Tx for the tip!

Constantin

On 26 Jan., 19:32, ryan ryanb+appeng...@google.com wrote:
 agreed, that would definitely help prevent multiple created values.
 using a guid generator would be even better.

 having said that, paging on created properties like that aren't
 really necessary now that we have __key__ filters and sort orders:

 http://code.google.com/appengine/docs/python/datastore/queriesandinde...

 they can be used manually, but i've also described a general way to
 use them to support scalable paging with any query:

 http://groups.google.com/group/google-appengine/browse_thread/thread/...
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[google-appengine] How-To Do Paging on App Engine

2009-01-26 Thread conman

I just looked into the artile How-To Do Paging on App Engine in the
App Engine archive
and I think that the Contributor object seems to me like an overkill
for that kind of problem.

If you want to prevent multiple 'created' values to be equal you could
just append a random number at the end of the 'created' value.

This way you can do the pagination as describe in the article while
minimizing the propability of multiple entries having the same
'created' value and without having to do this complicated Contributor
stuff and the computational expensive user-email-md5 obfuscation.

Regards,
Constantin
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[google-appengine] Re: Googe App Engine and Friend Connect...

2008-12-16 Thread conman

I amnot quite sure if I unserstand your question but I guess you need
to manage your own User Login status which can be triggered by either
Google Account Login or by FriendConnect or Facebook Connect or OpenId
etc...

That way a user would have the possibility to log in via different
auth providers and different accounts but link this different logins
to one user profile in your application.

Hope that helps.

On 16 Dez., 03:00, bvelasquez bvelasq...@gmail.com wrote:
 I added Google's Friend Connect to my GAE application.  Now, there are
 two sign in steps on my site.  One to authenticate using GAE users and
 the other for Friend Connect.  This is not desirable and I was
 wondering if anyone knew of the method for integrating the two so
 there is only one sign-in.  I should be able to pass the Google
 Authentication through Friend Connect to the GAE application.
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[google-appengine] Re: conversion of pricing into page impressions

2008-11-25 Thread conman

Ok, I guees I need to specify my question :)

Who has a running App Engine application with some amount of daily
traffic and can make an assumption about how much he will have to pay
if the pricing model kicks in?

I need a rough conversion between the page views an application can
deliver and the burned ressources - which have to be paid.

Thanks!
Constantin




On 22 Nov., 16:40, conman [EMAIL PROTECTED]
wrote:
 Hello,

 I know about the official pricing model for app engine[1], but where I
 need help is a rough conversion of this values (for example cpu
 cycles) into served page impressions. I know that this value depends
 heavily on the application, but what ranges are here to expect?

 And also I'd like to know which of the pricing variables (cpu, http
 requests, db storage) is likely to be the most expensive one?

 Regards,Constantin

 [1]http://www.google.com/intl/en/press/annc/20080527_google_io.html
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[google-appengine] Re: conversion of pricing into page impressions

2008-11-25 Thread conman

Ah, ok yejun, that doubles my guessing (which was $ 5 for 1 Mio. page
views)

Any other opinions?



On 25 Nov., 12:13, yejun [EMAIL PROTECTED] wrote:
 I think 1 million views will roughly cost $10 if each view uses 0.1s
 cpu and 100k size.

 On Nov 25, 5:55 am, conman [EMAIL PROTECTED]
 wrote:

  Ok, I guees I need to specify my question :)

  Who has a running App Engine application with some amount of daily
  traffic and can make an assumption about how much he will have to pay
  if the pricing model kicks in?

  I need a rough conversion between the page views an application can
  deliver and the burned ressources - which have to be paid.

  Thanks!
 Constantin

  On 22 Nov., 16:40, conman [EMAIL PROTECTED]
  wrote:

   Hello,

   I know about the official pricing model for app engine[1], but where I
   need help is a rough conversion of this values (for example cpu
   cycles) into served page impressions. I know that this value depends
   heavily on the application, but what ranges are here to expect?

   And also I'd like to know which of the pricing variables (cpu, http
   requests, db storage) is likely to be the most expensive one?

   Regards,Constantin

   [1]http://www.google.com/intl/en/press/annc/20080527_google_io.html
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[google-appengine] conversion of pricing into page impressions

2008-11-22 Thread conman

Hello,

I know about the official pricing model for app engine[1], but where I
need help is a rough conversion of this values (for example cpu
cycles) into served page impressions. I know that this value depends
heavily on the application, but what ranges are here to expect?

And also I'd like to know which of the pricing variables (cpu, http
requests, db storage) is likely to be the most expensive one?

Regards,
Constantin

[1] http://www.google.com/intl/en/press/annc/20080527_google_io.html
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