Re: [google-appengine] High replication data - Space freed after cache expiration?

[Darktux]

Hi all, and a big thank's for all your help,

Ok, your explication about the stored data is exactly what I mean Robert!

My application is a CDN, my blob files expiration date is about 1 month. So,
I taught my files are deleted by a cron job when this date is reached!

If not, do I remoove files manualy?

Thank's a lot again ;)

Luca

2011/6/13 Robert Kluin 

> Stored data is a cumulative quota; in other words, your total stored
> data gets counted not the daily increase.  Deleting datastore
> entities, or blobs from the blobstore, will decrease stored data.
> However, there is a lag between when you delete the data and the quota
> updates.
>
> I'm not sure what you mean by data expiration date.  You'll have to
> write something to delete entities.
>
> I'm also not sure what you mean by files.  Are you talking about
> application files, blobs, datastore entities, something else?
>
>
> Robert
>
>
>
>
> On Sat, Jun 11, 2011 at 18:52, Darktux  wrote:
> > Hi, you're rigth,
> > I talk about the amount of data of the High replication data quota.
> > So, I want to know if the High replication data quantity drops down when
> my
> > data expiration date is reached?
> > For the moment the HRD amount only goes up, even if I've deleted some
> great
> > quantity of files.
> > Thanks a lot ;)
> >
> >
> > 2011/6/11 Robert Kluin 
> >>
> >> Hi Luca,
> >>  What does "High Replication Data quota drop down when the cache
> >> expiration of my datas are reached" mean?  You're talking about the
> >> datastore, but mentioning "cache expiration of my datas" which makes
> >> me wonder if you're talking about memcache or perhaps request cache
> >> headers?
> >>
> >>  Perhaps you can rephrase and clarify the question.
> >>
> >>
> >> Robert
> >>
> >>
> >>
> >>
> >> On Fri, Jun 10, 2011 at 06:23, Transaction Commerce
> >>  wrote:
> >> > Hi all,
> >> > I'm new user of the Google App Engine, I have a CDN in High
> >> > Replication Data mode... and It's great ;)
> >> >
> >> > I have an simple question: Do my High Replication Data quota drop down
> >> > when the cache expiration of my datas are reached?
> >> > Or It continusly goes up?
> >> >
> >> > Thanc's In advance (Sorry for my bad english!)
> >> >
> >> > Luca
> >> >
> >> > --
> >> > You received this message because you are subscribed to the Google
> >> > Groups "Google App Engine" group.
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> google-appengine@googlegroups.com.
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> >> > http://groups.google.com/group/google-appengine?hl=en.
> >> >
> >> >
> >>
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> >>
> >
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[google-appengine] Using GroupsService inside Appengine

[Pedro Ferreira]

Hi there,

I am trying to Use GroupsService inside a Google Appengine Application, but
I'm getting the following error:

*javax.servlet.ServletContext log: Exception while dispatching incoming RPC call
com.google.gwt.user.server.rpc.UnexpectedException: Service method
'public abstract java.lang.String
spreadwords.client.GreetingService.createGroup(java.lang.String)'
threw an unexpected exception: java.lang.NoClassDefFoundError:
com/google/gdata/client/GoogleService*


Does anyone know what is going on ?


Thanks,


Pedro Ferreira

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Re: [google-appengine] High replication data - Space freed after cache expiration?

[Robert Kluin]

I'm not aware of an expiration date for blobs.

If you write the cron, then you can use the blobstore delete function:
  http://code.google.com/appengine/docs/python/blobstore/functions.html#delete

Or, if you're actually storing a BlobProperty in the datastore:
  http://code.google.com/appengine/docs/python/datastore/functions.html#delete



Robert




On Mon, Jun 13, 2011 at 05:08, Darktux  wrote:
> Hi all, and a big thank's for all your help,
> Ok, your explication about the stored data is exactly what I mean Robert!
> My application is a CDN, my blob files expiration date is about 1 month. So,
> I taught my files are deleted by a cron job when this date is reached!
> If not, do I remoove files manualy?
> Thank's a lot again ;)
> Luca
>
> 2011/6/13 Robert Kluin 
>>
>> Stored data is a cumulative quota; in other words, your total stored
>> data gets counted not the daily increase.  Deleting datastore
>> entities, or blobs from the blobstore, will decrease stored data.
>> However, there is a lag between when you delete the data and the quota
>> updates.
>>
>> I'm not sure what you mean by data expiration date.  You'll have to
>> write something to delete entities.
>>
>> I'm also not sure what you mean by files.  Are you talking about
>> application files, blobs, datastore entities, something else?
>>
>>
>> Robert
>>
>>
>>
>>
>> On Sat, Jun 11, 2011 at 18:52, Darktux  wrote:
>> > Hi, you're rigth,
>> > I talk about the amount of data of the High replication data quota.
>> > So, I want to know if the High replication data quantity drops down when
>> > my
>> > data expiration date is reached?
>> > For the moment the HRD amount only goes up, even if I've deleted some
>> > great
>> > quantity of files.
>> > Thanks a lot ;)
>> >
>> >
>> > 2011/6/11 Robert Kluin 
>> >>
>> >> Hi Luca,
>> >>  What does "High Replication Data quota drop down when the cache
>> >> expiration of my datas are reached" mean?  You're talking about the
>> >> datastore, but mentioning "cache expiration of my datas" which makes
>> >> me wonder if you're talking about memcache or perhaps request cache
>> >> headers?
>> >>
>> >>  Perhaps you can rephrase and clarify the question.
>> >>
>> >>
>> >> Robert
>> >>
>> >>
>> >>
>> >>
>> >> On Fri, Jun 10, 2011 at 06:23, Transaction Commerce
>> >>  wrote:
>> >> > Hi all,
>> >> > I'm new user of the Google App Engine, I have a CDN in High
>> >> > Replication Data mode... and It's great ;)
>> >> >
>> >> > I have an simple question: Do my High Replication Data quota drop
>> >> > down
>> >> > when the cache expiration of my datas are reached?
>> >> > Or It continusly goes up?
>> >> >
>> >> > Thanc's In advance (Sorry for my bad english!)
>> >> >
>> >> > Luca
>> >> >
>> >> > --
>> >> > 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-appengine@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.
>> >> >
>> >> >
>> >>
>> >> --
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>> >> "Google App Engine" group.
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>> >>
>> >
>> > --
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>> >
>>
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[google-appengine] Re: Go Language

[bFlood]

is this available on GAE now? also, can multiple goroutines be used to
service user requests from a single instance? I had though the Go blog
had stated this wasn't available on GAE yet



On Jun 12, 8:52 pm, "Ikai Lan (Google)"  wrote:
> Depends on how much number crunching. I say just use the language you like
> the best. Unless you're doing some kind of non-linear ops (and a LOT of
> them) you might not get the efficiency you're looking for moving to Java.
> The number crunching would have to be very significant relative to the time
> it takes to do IO for language speed to make a difference for simple math.
>
> One advantage the Go runtime has over Python and Java is that you can fire
> off Goroutines within a process. A Goroutine is to Go what a Thread is to
> Java or a fork is to Python. You communicate between Goroutines using
> channels and multiplex channels using the "select" statement. If you can
> break up your heavy computation into lots of small bits, you will consume
> the same amount of CPU but will consume less wallclock time, returning to
> the user faster.
>
> Ikai Lan
> Developer Programs Engineer, Google App Engine
> Blog:http://googleappengine.blogspot.com
> Twitter:http://twitter.com/app_engine
> Reddit:http://www.reddit.com/r/appengine
>
>
>
>
>
>
>
> On Mon, Jun 13, 2011 at 7:47 AM, supercobra  wrote:
> > Go is slower than Java and Java has all the libraries and tools (IDE,
> > debuggers, refactoring, profiling, etc...) that you'll need.
>
> > Here are the speed test results from a Google study:
>
> >http://www.readwriteweb.com/hack/2011/06/cpp-go-java-scala-performanc...
>
> > -- superco...@gmail.com
> >http://supercobrablogger.blogspot.com/
>
> > On Sun, Jun 12, 2011 at 6:39 PM, jay  wrote:
> > > Hi All,
>
> > > Anybody had a chance to play around with Go yet?
>
> > > My games are CPU heavy because I do a lot of number crunching on game
> > > data every time a user requests the game page. This code really has
> > > nothing to do with app engine but is pure game code. I would image
> > > this code would be significantly faster that Python.
>
> > > Anybody have any experiences to share yet?
>
> > > --
> > > 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-appengine@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.
>
> > --
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> > For more options, visit this group at
> >http://groups.google.com/group/google-appengine?hl=en.

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Re: [google-appengine] Re: Go Language

[Robert Kluin]

No, Go can't currently serve concurrent requests either.  If I'm not
mistaken Go is still also invite only, you can request an invite using
the form in the announcement blog post.




On Mon, Jun 13, 2011 at 13:42, bFlood  wrote:
> is this available on GAE now? also, can multiple goroutines be used to
> service user requests from a single instance? I had though the Go blog
> had stated this wasn't available on GAE yet
>
>
>
> On Jun 12, 8:52 pm, "Ikai Lan (Google)"  wrote:
>> Depends on how much number crunching. I say just use the language you like
>> the best. Unless you're doing some kind of non-linear ops (and a LOT of
>> them) you might not get the efficiency you're looking for moving to Java.
>> The number crunching would have to be very significant relative to the time
>> it takes to do IO for language speed to make a difference for simple math.
>>
>> One advantage the Go runtime has over Python and Java is that you can fire
>> off Goroutines within a process. A Goroutine is to Go what a Thread is to
>> Java or a fork is to Python. You communicate between Goroutines using
>> channels and multiplex channels using the "select" statement. If you can
>> break up your heavy computation into lots of small bits, you will consume
>> the same amount of CPU but will consume less wallclock time, returning to
>> the user faster.
>>
>> Ikai Lan
>> Developer Programs Engineer, Google App Engine
>> Blog:http://googleappengine.blogspot.com
>> Twitter:http://twitter.com/app_engine
>> Reddit:http://www.reddit.com/r/appengine
>>
>>
>>
>>
>>
>>
>>
>> On Mon, Jun 13, 2011 at 7:47 AM, supercobra  wrote:
>> > Go is slower than Java and Java has all the libraries and tools (IDE,
>> > debuggers, refactoring, profiling, etc...) that you'll need.
>>
>> > Here are the speed test results from a Google study:
>>
>> >http://www.readwriteweb.com/hack/2011/06/cpp-go-java-scala-performanc...
>>
>> > -- superco...@gmail.com
>> >http://supercobrablogger.blogspot.com/
>>
>> > On Sun, Jun 12, 2011 at 6:39 PM, jay  wrote:
>> > > Hi All,
>>
>> > > Anybody had a chance to play around with Go yet?
>>
>> > > My games are CPU heavy because I do a lot of number crunching on game
>> > > data every time a user requests the game page. This code really has
>> > > nothing to do with app engine but is pure game code. I would image
>> > > this code would be significantly faster that Python.
>>
>> > > Anybody have any experiences to share yet?
>>
>> > > --
>> > > 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-appengine@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.
>>
>> > --
>> > You received this message because you are subscribed to the Google Groups
>> > "Google App Engine" group.
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>> > 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.
>
> --
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>

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RE: [google-appengine] Re: Go Language

[Brandon Wirtz]

Multi-threading is coming but not available yet.

-Original Message-
From: google-appengine@googlegroups.com
[mailto:google-appengine@googlegroups.com] On Behalf Of bFlood
Sent: Monday, June 13, 2011 10:43 AM
To: Google App Engine
Subject: [google-appengine] Re: Go Language

is this available on GAE now? also, can multiple goroutines be used to
service user requests from a single instance? I had though the Go blog had
stated this wasn't available on GAE yet



On Jun 12, 8:52 pm, "Ikai Lan (Google)"  wrote:
> Depends on how much number crunching. I say just use the language you 
> like the best. Unless you're doing some kind of non-linear ops (and a 
> LOT of
> them) you might not get the efficiency you're looking for moving to Java.
> The number crunching would have to be very significant relative to the 
> time it takes to do IO for language speed to make a difference for simple
math.
>
> One advantage the Go runtime has over Python and Java is that you can 
> fire off Goroutines within a process. A Goroutine is to Go what a 
> Thread is to Java or a fork is to Python. You communicate between 
> Goroutines using channels and multiplex channels using the "select" 
> statement. If you can break up your heavy computation into lots of 
> small bits, you will consume the same amount of CPU but will consume 
> less wallclock time, returning to the user faster.
>
> Ikai Lan
> Developer Programs Engineer, Google App Engine 
> Blog:http://googleappengine.blogspot.com
> Twitter:http://twitter.com/app_engine
> Reddit:http://www.reddit.com/r/appengine
>
>
>
>
>
>
>
> On Mon, Jun 13, 2011 at 7:47 AM, supercobra  wrote:
> > Go is slower than Java and Java has all the libraries and tools 
> > (IDE, debuggers, refactoring, profiling, etc...) that you'll need.
>
> > Here are the speed test results from a Google study:
>
> >http://www.readwriteweb.com/hack/2011/06/cpp-go-java-scala-performanc...
>
> > -- superco...@gmail.com
> >http://supercobrablogger.blogspot.com/
>
> > On Sun, Jun 12, 2011 at 6:39 PM, jay  wrote:
> > > Hi All,
>
> > > Anybody had a chance to play around with Go yet?
>
> > > My games are CPU heavy because I do a lot of number crunching on 
> > > game data every time a user requests the game page. This code 
> > > really has nothing to do with app engine but is pure game code. I 
> > > would image this code would be significantly faster that Python.
>
> > > Anybody have any experiences to share yet?
>
> > > --
> > > 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-appengine@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.
>
> > --
> > You received this message because you are subscribed to the Google 
> > Groups "Google App Engine" group.
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> > 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.

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[google-appengine] Re: how to change username for deployment in eclipse plugin

[cw bright]

Ah, thank you! I did end up using the command line, but I'd like to be able 
to just click the deploy button in eclipse, too.

Can you give me more details on how to clear the cache for the eclipse 
plugin? (I immediately thought of clearing my chrome cache, but I don't 
think that's right)

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Re: [google-appengine] Re: Go Language

[Barry Hunter]

http://blog.golang.org/2011/05/go-and-google-app-engine.html

>From my understanding  goroutines belong to one 'request'

On Mon, Jun 13, 2011 at 6:42 PM, bFlood  wrote:
> is this available on GAE now? also, can multiple goroutines be used to
> service user requests from a single instance? I had though the Go blog
> had stated this wasn't available on GAE yet
>
>
>
> On Jun 12, 8:52 pm, "Ikai Lan (Google)"  wrote:
>> Depends on how much number crunching. I say just use the language you like
>> the best. Unless you're doing some kind of non-linear ops (and a LOT of
>> them) you might not get the efficiency you're looking for moving to Java.
>> The number crunching would have to be very significant relative to the time
>> it takes to do IO for language speed to make a difference for simple math.
>>
>> One advantage the Go runtime has over Python and Java is that you can fire
>> off Goroutines within a process. A Goroutine is to Go what a Thread is to
>> Java or a fork is to Python. You communicate between Goroutines using
>> channels and multiplex channels using the "select" statement. If you can
>> break up your heavy computation into lots of small bits, you will consume
>> the same amount of CPU but will consume less wallclock time, returning to
>> the user faster.
>>
>> Ikai Lan
>> Developer Programs Engineer, Google App Engine
>> Blog:http://googleappengine.blogspot.com
>> Twitter:http://twitter.com/app_engine
>> Reddit:http://www.reddit.com/r/appengine
>>
>>
>>
>>
>>
>>
>>
>> On Mon, Jun 13, 2011 at 7:47 AM, supercobra  wrote:
>> > Go is slower than Java and Java has all the libraries and tools (IDE,
>> > debuggers, refactoring, profiling, etc...) that you'll need.
>>
>> > Here are the speed test results from a Google study:
>>
>> >http://www.readwriteweb.com/hack/2011/06/cpp-go-java-scala-performanc...
>>
>> > -- superco...@gmail.com
>> >http://supercobrablogger.blogspot.com/
>>
>> > On Sun, Jun 12, 2011 at 6:39 PM, jay  wrote:
>> > > Hi All,
>>
>> > > Anybody had a chance to play around with Go yet?
>>
>> > > My games are CPU heavy because I do a lot of number crunching on game
>> > > data every time a user requests the game page. This code really has
>> > > nothing to do with app engine but is pure game code. I would image
>> > > this code would be significantly faster that Python.
>>
>> > > Anybody have any experiences to share yet?
>>
>> > > --
>> > > 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-appengine@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.
>>
>> > --
>> > You received this message because you are subscribed to the Google Groups
>> > "Google App Engine" group.
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>> > 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.
>
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Re: [google-appengine] Re: how to change username for deployment in eclipse plugin

[A. Stevko]

On the bottom left of my eclipse workspace there is a 'G' logo with my
logged in name. Hover over it and the tool tip says 'signed in as --- Click
to sign out"

On Mon, Jun 13, 2011 at 10:55 AM, cw bright  wrote:

> Ah, thank you! I did end up using the command line, but I'd like to be able
> to just click the deploy button in eclipse, too.
>
> Can you give me more details on how to clear the cache for the eclipse
> plugin? (I immediately thought of clearing my chrome cache, but I don't
> think that's right)
>
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-- 
-- A. Stevko
===
"If everything seems under control, you're just not going fast enough." M.
Andretti

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Re: [google-appengine] Re: how to change username for deployment in eclipse plugin

[cw bright]

lol I see it now.. thank you very much!

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[google-appengine] App not uploaded, says 0 files changed

[Rikard]

I have changed some source, do deploy. It compiles and everything but goes 
on to "Uploading 0 files" and sure enough my servlet has not been updated.

This suddenly happens now, after many successful deploys. Any ideas?

Java
GPE 2.4
GAE 1.5

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[google-appengine] Ang.: App not uploaded, says 0 files changed

[Rikard]

Solved.

Don't know what I did though, tried to "Clean Project" again and did another 
deploy and this time it recognized that files had changed...

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[google-appengine] Re: Sending result tuples through many http responses

[Joe]

have you tried using Django Paging? just request each page in turn
until you get all the data you need..
(i've never used it for such a large dataset so no idea how it will
perform!)

Try this link:
http://appengine-cookbook.appspot.com/recipe/simple-pagination-djangocorepaginator




On Jun 10, 4:49 pm, Robert Kluin  wrote:
> Hi Bruce,
>   One option might be the Channel API, depending on what your client
> is written in.  I assume you're not sending that many results to a
> browser though, so it might not work for you.
>    http://code.google.com/appengine/docs/python/channel/
>
>   Another option would be for your client to submit the request, then
> you could kick off a background job (using tasks) to write the result
> set to the blobstore, and once complete the client could download the
> blob and process it.  You're client would need to periodically check
> with the server to know when the query is complete.
>    http://code.google.com/appengine/docs/python/blobstore/overview.html#...
>
>   And, the most basic solution to implement from the server side would
> be to use cursors. If you can adjust the client to download chunks at
> a time, this would probably be the easiest.
>    http://code.google.com/appengine/docs/python/datastore/queries.html#Q...
>
> Robert
>
>
>
>
>
>
>
> On Thu, Jun 9, 2011 at 06:06, Bruce Aloe  wrote:
> > Hello,
>
> > I store quite a lot of data (e.g 10 million) tuples (rows) in my
> > Person kind (table) at GAE datastore. Now i want to query the Person
> > kind from my web application.  For example my web application sends a
> > query (e.g select * from Person where height < 2) through a http
> > request to my server (python code) and the server gets the query and
> > run it in order to generate the result tuples. For this query (select
> > * from Person where height < 2), the server will generate quite big
> > dataset (tuples) back since not many people are taller than 2m. Due to
> > the generated result tuples are too big, i can not send the whole
> > result tuples in one time through a http response to my web
> > application. Therefore, i use cursor with the query and each time
> > generate a partial result tuples (e.g 1) from the total result
> > tuples generated by running the query and try to return the 1
> > result tuples each time through a http response. As you might realize,
> > i send just one http request with a query to my server and want my
> > server to send many http responses to my web application and each
> > response carries 1 result tuples to my web application.
>
> > My question is: How can my server sends many http responses back to my
> > web appilcation for a http request sending from my web application?
>
> > Thank you very much!
>
> > Bruce
>
> > --
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> > "Google App Engine" group.
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Re: [google-appengine] Re: Sending result tuples through many http responses

[Chris Copeland]

I've not used that particular code (looks like it is written for Django
0.96) but the Django Paginator is designed for RDBMS that support LIMIT and
OFFSET parameters.  On App Engine this is going to result in having to fetch
all the data from the first each time.

Scalable pagination on App Engine will require using cursors:
http://code.google.com/appengine/docs/python/datastore/queries.html#Query_Cursors

-Chris

On Mon, Jun 13, 2011 at 2:30 PM, Joe  wrote:

> have you tried using Django Paging? just request each page in turn
> until you get all the data you need..
> (i've never used it for such a large dataset so no idea how it will
> perform!)
>
> Try this link:
>
> http://appengine-cookbook.appspot.com/recipe/simple-pagination-djangocorepaginator
>
>
>
>
> On Jun 10, 4:49 pm, Robert Kluin  wrote:
> > Hi Bruce,
> >   One option might be the Channel API, depending on what your client
> > is written in.  I assume you're not sending that many results to a
> > browser though, so it might not work for you.
> >http://code.google.com/appengine/docs/python/channel/
> >
> >   Another option would be for your client to submit the request, then
> > you could kick off a background job (using tasks) to write the result
> > set to the blobstore, and once complete the client could download the
> > blob and process it.  You're client would need to periodically check
> > with the server to know when the query is complete.
> >
> http://code.google.com/appengine/docs/python/blobstore/overview.html#...
> >
> >   And, the most basic solution to implement from the server side would
> > be to use cursors. If you can adjust the client to download chunks at
> > a time, this would probably be the easiest.
> >
> http://code.google.com/appengine/docs/python/datastore/queries.html#Q...
> >
> > Robert
> >
> >
> >
> >
> >
> >
> >
> > On Thu, Jun 9, 2011 at 06:06, Bruce Aloe  wrote:
> > > Hello,
> >
> > > I store quite a lot of data (e.g 10 million) tuples (rows) in my
> > > Person kind (table) at GAE datastore. Now i want to query the Person
> > > kind from my web application.  For example my web application sends a
> > > query (e.g select * from Person where height < 2) through a http
> > > request to my server (python code) and the server gets the query and
> > > run it in order to generate the result tuples. For this query (select
> > > * from Person where height < 2), the server will generate quite big
> > > dataset (tuples) back since not many people are taller than 2m. Due to
> > > the generated result tuples are too big, i can not send the whole
> > > result tuples in one time through a http response to my web
> > > application. Therefore, i use cursor with the query and each time
> > > generate a partial result tuples (e.g 1) from the total result
> > > tuples generated by running the query and try to return the 1
> > > result tuples each time through a http response. As you might realize,
> > > i send just one http request with a query to my server and want my
> > > server to send many http responses to my web application and each
> > > response carries 1 result tuples to my web application.
> >
> > > My question is: How can my server sends many http responses back to my
> > > web appilcation for a http request sending from my web application?
> >
> > > Thank you very much!
> >
> > > Bruce
> >
> > > --
> > > You received this message because you are subscribed to the Google
> Groups "Google App Engine" group.
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> .
> > > To unsubscribe from this group, send email to
> google-appengine+unsubscr...@googlegroups.com.
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> groups.google.com/group/google-appengine?hl=en.
>
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[google-appengine] using none google apps domains to alias a google apps based app engine custom domain

[ddelrivero]

Hi App Engine team,

I have an special requirement for my app engine app, it will be a
consumer app where users will sign up and will be able to map their
custom domain name (probably most of them none google apps users) to
their own account inside my web app.
let's say the web app's url is:  www.mysupercoolapp.com ( an app
engine app using a custom domain setup with google apps)
users can create their normal accounts and will be named like:
www.mysupercoolapp.com/useraccountname
but I want them to be able to associate their own domain name, let's
say: www.customerdomain.com to their account, so when you type
www.customerdomain.com it will be an alias of www.mysupercoolapp.com
and I can detect it looking at the url host name and load their
account.

I know 2 ways of doing it:

1- I can make them create a google apps account with their own domain
name and then tell them to add my app engine .appspot.com as a
service
inside their admin account and map a subdomain to this service,
mysupercoolapp.appspot.com mapped to www.customerdomain.com.

2- I can create a domain alias inside my google apps account, adding
manually customerdomain.com (which is not using google apps), then
make them do some verification of ownership then I can map
mysupercoolapp.appspot.com to a subdomain of customerdomain.com and
again do dns changes... (any way I don't want to pollute my account
with domains I don't own).

NONE of those are in any way a good solution for my business, I don't
want to force them create a google apps account and do
configurations,
nor do any manual stuff, it would be a horrific and bad user
experience...

Can you please point me how can I solve this as trasparent as
possible ? be able to receive customers with their domain names
(google apps users or not google apps users) and alias them to my
google apps custom domain name running an App Engine app,  just
asking
them just to change dns records (as most websites do). I came up with
the idea that if you had a provisioning api to programmatically do
the
first solution I mentioned it could solve this in some way,but it
would be wasteful to create google apps accounts just to do the
mapping of custom domains... I hope you have or will have soon a
solution for this.

Thank you.
Damian

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Re: [google-appengine] using none google apps domains to alias a google apps based app engine custom domain

[Chris Copeland]

+1:  I have the exact same need for one of my applications.  I'm sure other
people must have faced this as well as more and more commercial apps are
built on GAE.

The only solution I have considered is to run a proxy on EC2 or somewhere
but that is really not ideal.  I may just use that as a fallback for
customers who refuse Google Apps registration.

-Chris

On Mon, Jun 13, 2011 at 4:16 PM, ddelrivero  wrote:

> Hi App Engine team,
>
> I have an special requirement for my app engine app, it will be a
> consumer app where users will sign up and will be able to map their
> custom domain name (probably most of them none google apps users) to
> their own account inside my web app.
> let's say the web app's url is:  www.mysupercoolapp.com ( an app
> engine app using a custom domain setup with google apps)
> users can create their normal accounts and will be named like:
> www.mysupercoolapp.com/useraccountname
> but I want them to be able to associate their own domain name, let's
> say: www.customerdomain.com to their account, so when you type
> www.customerdomain.com it will be an alias of www.mysupercoolapp.com
> and I can detect it looking at the url host name and load their
> account.
>
> I know 2 ways of doing it:
>
> 1- I can make them create a google apps account with their own domain
> name and then tell them to add my app engine .appspot.com as a
> service
> inside their admin account and map a subdomain to this service,
> mysupercoolapp.appspot.com mapped to www.customerdomain.com.
>
> 2- I can create a domain alias inside my google apps account, adding
> manually customerdomain.com (which is not using google apps), then
> make them do some verification of ownership then I can map
> mysupercoolapp.appspot.com to a subdomain of customerdomain.com and
> again do dns changes... (any way I don't want to pollute my account
> with domains I don't own).
>
> NONE of those are in any way a good solution for my business, I don't
> want to force them create a google apps account and do
> configurations,
> nor do any manual stuff, it would be a horrific and bad user
> experience...
>
> Can you please point me how can I solve this as trasparent as
> possible ? be able to receive customers with their domain names
> (google apps users or not google apps users) and alias them to my
> google apps custom domain name running an App Engine app,  just
> asking
> them just to change dns records (as most websites do). I came up with
> the idea that if you had a provisioning api to programmatically do
> the
> first solution I mentioned it could solve this in some way,but it
> would be wasteful to create google apps accounts just to do the
> mapping of custom domains... I hope you have or will have soon a
> solution for this.
>
> Thank you.
> Damian
>
> --
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>
>

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[google-appengine] Credentials bug in Windows 7 64bit

[William Parry]

Hi,

I recently moved from OS X to Windows 7 64bit and subsequently so did my App 
Engine environment.

There appears to be a bug where I have to type in my credentials each time I 
wish to deploy. In the OS X version this is saved.

Thanks,

William

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[google-appengine] Tons of datastore operation timed out errors

[vivpuri]

My app has been getting thousands of  datastore operation timed out
for past few hours. Can someone please look into it


Thank you

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[google-appengine] GAE Hackaton in KL, anyone?

[Thomas Wiradikusuma]

Hi guys,

Any of you attending GAE Hackaton in KL, Malaysia, this weekend? I
reserved my spot. Any of you attended it anywhere else before? How's
the experience? Is this similiar with Startup Weekend?

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[google-appengine] Re: Tons of datastore operation timed out errors

[vivpuri]

Will anyone from AppEngine please reply




On Jun 13, 9:57 pm, vivpuri  wrote:
> My app has been getting thousands of  datastore operation timed out
> for past few hours. Can someone please look into it
>
> Thank you

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[google-appengine] Re: Tons of datastore operation timed out errors

[vivpuri]

MS. I havent checked the query itself since all kinds of queries are
failing, and not just one in particular.


On Jun 13, 10:46 pm, "Brandon Wirtz"  wrote:
> HR or MS? Will the query that times out run from the admin interface?
>
>
>
>
>
>
>
> -Original Message-
> From: google-appengine@googlegroups.com
>
> [mailto:google-appengine@googlegroups.com] On Behalf Of vivpuri
> Sent: Monday, June 13, 2011 7:38 PM
> To: Google App Engine
> Subject: [google-appengine] Re: Tons of datastore operation timed out errors
>
> Will anyone from AppEngine please reply
>
> On Jun 13, 9:57 pm, vivpuri  wrote:
> > My app has been getting thousands of  datastore operation timed out
> > for past few hours. Can someone please look into it
>
> > Thank you
>
> --
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RE: [google-appengine] Re: Tons of datastore operation timed out errors

[Brandon Wirtz]

There is a reason most of us moved off of MS and over to HR.


-Original Message-
From: google-appengine@googlegroups.com
[mailto:google-appengine@googlegroups.com] On Behalf Of vivpuri
Sent: Monday, June 13, 2011 7:49 PM
To: Google App Engine
Subject: [google-appengine] Re: Tons of datastore operation timed out errors

MS. I havent checked the query itself since all kinds of queries are
failing, and not just one in particular.


On Jun 13, 10:46 pm, "Brandon Wirtz"  wrote:
> HR or MS? Will the query that times out run from the admin interface?
>
>
>
>
>
>
>
> -Original Message-
> From: google-appengine@googlegroups.com
>
> [mailto:google-appengine@googlegroups.com] On Behalf Of vivpuri
> Sent: Monday, June 13, 2011 7:38 PM
> To: Google App Engine
> Subject: [google-appengine] Re: Tons of datastore operation timed out 
> errors
>
> Will anyone from AppEngine please reply
>
> On Jun 13, 9:57 pm, vivpuri  wrote:
> > My app has been getting thousands of  datastore operation timed out 
> > for past few hours. Can someone please look into it
>
> > Thank you
>
> --
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RE: [google-appengine] Re: Tons of datastore operation timed out errors

[Brandon Wirtz]

HR or MS? Will the query that times out run from the admin interface?


-Original Message-
From: google-appengine@googlegroups.com
[mailto:google-appengine@googlegroups.com] On Behalf Of vivpuri
Sent: Monday, June 13, 2011 7:38 PM
To: Google App Engine
Subject: [google-appengine] Re: Tons of datastore operation timed out errors

Will anyone from AppEngine please reply




On Jun 13, 9:57 pm, vivpuri  wrote:
> My app has been getting thousands of  datastore operation timed out 
> for past few hours. Can someone please look into it
>
> Thank you

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[google-appengine] Re: Tons of datastore operation timed out errors

[vivpuri]

@appengine team, please respond.

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Re: [google-appengine] GAE Hackaton in KL, anyone?

[Ikai Lan (Google)]

I'll be there. I don't know what I'd compare it to. I'll be doing some
presentations about App Engine. There's a local group doing some
presentations about Android.

My understanding (warning: I'm not the canonical source of data) is that
there are a bunch of local companies involved in organizing the event that
will be providing speakers. There's space for ~150 people. Signups are at
about 66%.

Ikai Lan
Developer Programs Engineer, Google App Engine
Blog: http://googleappengine.blogspot.com
Twitter: http://twitter.com/app_engine
Reddit: http://www.reddit.com/r/appengine



On Tue, Jun 14, 2011 at 10:21 AM, Thomas Wiradikusuma <
wiradikus...@gmail.com> wrote:

> Hi guys,
>
> Any of you attending GAE Hackaton in KL, Malaysia, this weekend? I
> reserved my spot. Any of you attended it anywhere else before? How's
> the experience? Is this similiar with Startup Weekend?
>
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Re: [google-appengine] Re: Go Language

[Ikai Lan (Google)]

Yep. Goroutines belong to a single request. The Go team is working on
concurrent requests per instance. Goroutines replace the need for
asynchronous APIs.

Ikai Lan
Developer Programs Engineer, Google App Engine
Blog: http://googleappengine.blogspot.com
Twitter: http://twitter.com/app_engine
Reddit: http://www.reddit.com/r/appengine



On Tue, Jun 14, 2011 at 1:58 AM, Barry Hunter wrote:

> http://blog.golang.org/2011/05/go-and-google-app-engine.html
>
> From my understanding  goroutines belong to one 'request'
>
> On Mon, Jun 13, 2011 at 6:42 PM, bFlood 
> wrote:
> > is this available on GAE now? also, can multiple goroutines be used to
> > service user requests from a single instance? I had though the Go blog
> > had stated this wasn't available on GAE yet
> >
> >
> >
> > On Jun 12, 8:52 pm, "Ikai Lan (Google)"  wrote:
> >> Depends on how much number crunching. I say just use the language you
> like
> >> the best. Unless you're doing some kind of non-linear ops (and a LOT of
> >> them) you might not get the efficiency you're looking for moving to
> Java.
> >> The number crunching would have to be very significant relative to the
> time
> >> it takes to do IO for language speed to make a difference for simple
> math.
> >>
> >> One advantage the Go runtime has over Python and Java is that you can
> fire
> >> off Goroutines within a process. A Goroutine is to Go what a Thread is
> to
> >> Java or a fork is to Python. You communicate between Goroutines using
> >> channels and multiplex channels using the "select" statement. If you can
> >> break up your heavy computation into lots of small bits, you will
> consume
> >> the same amount of CPU but will consume less wallclock time, returning
> to
> >> the user faster.
> >>
> >> Ikai Lan
> >> Developer Programs Engineer, Google App Engine
> >> Blog:http://googleappengine.blogspot.com
> >> Twitter:http://twitter.com/app_engine
> >> Reddit:http://www.reddit.com/r/appengine
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> >> On Mon, Jun 13, 2011 at 7:47 AM, supercobra 
> wrote:
> >> > Go is slower than Java and Java has all the libraries and tools (IDE,
> >> > debuggers, refactoring, profiling, etc...) that you'll need.
> >>
> >> > Here are the speed test results from a Google study:
> >>
> >> >http://www.readwriteweb.com/hack/2011/06/cpp-go-java-scala-performanc.
> ..
> >>
> >> > -- superco...@gmail.com
> >> >http://supercobrablogger.blogspot.com/
> >>
> >> > On Sun, Jun 12, 2011 at 6:39 PM, jay  wrote:
> >> > > Hi All,
> >>
> >> > > Anybody had a chance to play around with Go yet?
> >>
> >> > > My games are CPU heavy because I do a lot of number crunching on
> game
> >> > > data every time a user requests the game page. This code really has
> >> > > nothing to do with app engine but is pure game code. I would image
> >> > > this code would be significantly faster that Python.
> >>
> >> > > Anybody have any experiences to share yet?
> >>
> >> > > --
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> >>
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Re: [google-appengine] Credentials bug in Windows 7 64bit

[Ikai Lan (Google)]

Is this a bug or default Windows behavior? You can use the --passin
parameter and write a script.

Ikai Lan
Developer Programs Engineer, Google App Engine
Blog: http://googleappengine.blogspot.com
Twitter: http://twitter.com/app_engine
Reddit: http://www.reddit.com/r/appengine



On Tue, Jun 14, 2011 at 6:51 AM, William Parry wrote:

> Hi,
>
> I recently moved from OS X to Windows 7 64bit and subsequently so did my
> App Engine environment.
>
> There appears to be a bug where I have to type in my credentials each time
> I wish to deploy. In the OS X version this is saved.
>
> Thanks,
>
> William
>
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[google-appengine] Handling File Uploads

[crazywizard]

I need to handle uploaded files on my server. Problem is, the uploads
come from other user applications that I have no control over. My
problem centers around how to get the uploaded file without
referencing or knowing the index/key name of the file.
My app engine python code:
file=self.request.POST['file']

As you can see, I have to explicitly define the key name as 'file'.
However, the uploading application doesn't have this defined.
Pys60 code:
conn=httplib.HTTPConnection("www.myserver.com")
conn.request("POST", "/upload", 'file")

This only defines the method, destination, and file object. How can I
still get the POSTED file?
Please do not ask me to change or manipulate the client upload
procedures/functions because I don't have access to them.!

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[google-appengine] BlobInfo.filename from parse_blob_info(): what encoding is used? (Python)

[pascal]

When retrieving a BlobInfo from the datastore using BlobInfo.get(key),
the filename is a unicode.

However, when uploading a file to the blobstore using
blobstore.create_upload_url(), and then using
blobstore.parse_blob_info(), the filename attribute of the returned
BlobInfo is a python str.

I assume the encoding is specified by the form submission POST
request; I haven't been able to find the answer in the Python cgi
module. How can I get this encoding in Python?

Thx in advance. Pascal

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[google-appengine] Please visit this blog.... Amazing one

[Rathish]

http://hackingprogrammers.blogspot.com/

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[google-appengine] Re: Tons of datastore operation timed out errors

[vivpuri]

@appengine folks, you really need to step in to help here. Mine is a
paid application, and really expect support here.


On Jun 13, 11:01 pm, vivpuri  wrote:
> @appengine team, please respond.

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Re: [google-appengine] Please visit this blog.... Amazing one

[Ikai Lan (Google)]

I fat fingered approve on this. Banning.

Ikai Lan
Developer Programs Engineer, Google App Engine
Blog: http://googleappengine.blogspot.com
Twitter: http://twitter.com/app_engine
Reddit: http://www.reddit.com/r/appengine



On Tue, Jun 14, 2011 at 11:27 AM, Brandon Wirtz  wrote:

> What kind of idiot gets the idea to spam a Google list to drive traffic?
>
>
>
> -Original Message-
> From: google-appengine@googlegroups.com
> [mailto:google-appengine@googlegroups.com] On Behalf Of Rathish
> Sent: Monday, June 13, 2011 7:45 AM
> To: Google App Engine
> Subject: [google-appengine] Please visit this blog Amazing one
>
> http://hackingprogrammers.blogspot.com/
>
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>
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RE: [google-appengine] Credentials bug in Windows 7 64bit

[Brandon Wirtz]

In python I get prompted every so many hours.

 

From: google-appengine@googlegroups.com
[mailto:google-appengine@googlegroups.com] On Behalf Of Ikai Lan (Google)
Sent: Monday, June 13, 2011 8:10 PM
To: Google App Engine
Subject: Re: [google-appengine] Credentials bug in Windows 7 64bit

 

Is this a bug or default Windows behavior? You can use the --passin
parameter and write a script.


Ikai Lan 
Developer Programs Engineer, Google App Engine

Blog: http://googleappengine.blogspot.com 

Twitter: http://twitter.com/app_engine

Reddit: http://www.reddit.com/r/appengine





On Tue, Jun 14, 2011 at 6:51 AM, William Parry 
wrote:

Hi,

 

I recently moved from OS X to Windows 7 64bit and subsequently so did my App
Engine environment.

 

There appears to be a bug where I have to type in my credentials each time I
wish to deploy. In the OS X version this is saved.

 

Thanks,

 

William

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 .
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RE: [google-appengine] Please visit this blog.... Amazing one

[Brandon Wirtz]

What kind of idiot gets the idea to spam a Google list to drive traffic?  



-Original Message-
From: google-appengine@googlegroups.com
[mailto:google-appengine@googlegroups.com] On Behalf Of Rathish
Sent: Monday, June 13, 2011 7:45 AM
To: Google App Engine
Subject: [google-appengine] Please visit this blog Amazing one

http://hackingprogrammers.blogspot.com/

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Re: [google-appengine] Handling File Uploads

[Nick Johnson (Google)]

Hi,

In the example below, the file isn't being uploaded as part of a form - it's
simply the contents of the request body. You can access it with
self.request.body.

-Nick Johnson

On Mon, Jun 13, 2011 at 4:36 PM, crazywizard  wrote:

> I need to handle uploaded files on my server. Problem is, the uploads
> come from other user applications that I have no control over. My
> problem centers around how to get the uploaded file without
> referencing or knowing the index/key name of the file.
> My app engine python code:
> file=self.request.POST['file']
>
> As you can see, I have to explicitly define the key name as 'file'.
> However, the uploading application doesn't have this defined.
> Pys60 code:
> conn=httplib.HTTPConnection("www.myserver.com")
> conn.request("POST", "/upload", 'file")
>
> This only defines the method, destination, and file object. How can I
> still get the POSTED file?
> Please do not ask me to change or manipulate the client upload
> procedures/functions because I don't have access to them.!
>
> --
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>


-- 
Nick Johnson, Developer Programs Engineer, App Engine

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Re: [google-appengine] Sending result tuples through many http responses

[Nick Johnson (Google)]

Hi Bruce,

In the HTTP model, every request has exactly one response. Your first
response should contain the URL the client should use to make the second
request, and so forth. Subsequent request URLs contain whatever data your
app needs to generate the next set of rows.

Note that allowing your users to submit arbitrary (GQL) datastore queries is
generally a bad idea, and pretty much guaranteed to lead to unwanted
disclosures.

-Nick Johnson


On Thu, Jun 9, 2011 at 8:06 PM, Bruce Aloe  wrote:

> Hello,
>
> I store quite a lot of data (e.g 10 million) tuples (rows) in my
> Person kind (table) at GAE datastore. Now i want to query the Person
> kind from my web application.  For example my web application sends a
> query (e.g select * from Person where height < 2) through a http
> request to my server (python code) and the server gets the query and
> run it in order to generate the result tuples. For this query (select
> * from Person where height < 2), the server will generate quite big
> dataset (tuples) back since not many people are taller than 2m. Due to
> the generated result tuples are too big, i can not send the whole
> result tuples in one time through a http response to my web
> application. Therefore, i use cursor with the query and each time
> generate a partial result tuples (e.g 1) from the total result
> tuples generated by running the query and try to return the 1
> result tuples each time through a http response. As you might realize,
> i send just one http request with a query to my server and want my
> server to send many http responses to my web application and each
> response carries 1 result tuples to my web application.
>
> My question is: How can my server sends many http responses back to my
> web appilcation for a http request sending from my web application?
>
> Thank you very much!
>
> Bruce
>
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