Re: [google-appengine] Re: security issue (strange behavior)
The answers to your questions are in here: https://developers.google.com/appengine/docs/ As someone that has spent significant time outside my own country, I appreciate that this presents some linguistic challenges. However, a few hours or days spent reading the documentation will be more effective than a lifetime of asking questions here. Jeff On Thu, Apr 18, 2013 at 10:38 PM, @Mlaynes mlaynessanc...@gmail.com wrote: Ok.. these are some of solutions implemented about the issue: 1. eliminate the ugly error page thrown by GAE .. and it was easy, setting correctly our Guestbook.JSP file to show our personal errorPage (of course, the design can be better) %@ page contentType=text/html;charset=UTF-8 language=java % %@ page errorPage=/errorPage.jsp isErrorPage=true % https://lh5.googleusercontent.com/-r95hITXAf04/UXCgTWF3DFI/C0E/hes2VQbBy7g/s1600/igguestbook_issue02.jpg 2.- to try eliminate or diminishDatastore Read Operations, we have implemented using memcache..but as you will see, not happens something better.. https://lh6.googleusercontent.com/-oDzPSHq2ak8/UXCmygZ3JDI/C0U/ofzLEEBzwyY/s1600/igguestbook_issue03.jpg https://lh6.googleusercontent.com/-a3tIKUzZFts/UXCm4PqlreI/C0c/3EmgX3XZLF4/s1600/igguestbook_issue04.jpg to implement memcache I use fist key-only thecnic, because according to the manual has some advantages and because my uestbook is a grid (created with table tag) A *keys-only query* returns just the keys of the result entities instead of the entities themselves, at lower latency and cost than retrieving entire entities: Query q = pm.newQuery(select id from + Person.class.getName()); ListString ids = (ListString) q.execute(); of course, then with each key, it was worked on memcache service but, now I see that seems any query operation on datastore consumes Datastore Read Operation, even key-only operations.. so then, is there some best technic to work with memcache? is it possible to do query on memcache with GAE-Java? can anybody tell me something about this ? Note : I've not corrected yet recording of empty ads to keep the spam attack and use it to improve my techniques GAE-Java development, and of course, we will continue our testings best to all @Mlaynes -- You received this message because you are subscribed to the Google Groups Google App Engine group. To unsubscribe from this group and stop receiving emails from it, send an email to google-appengine+unsubscr...@googlegroups.com. To post to this group, send email to google-appengine@googlegroups.com. Visit this group at http://groups.google.com/group/google-appengine?hl=en. For more options, visit https://groups.google.com/groups/opt_out. -- You received this message because you are subscribed to the Google Groups Google App Engine group. To unsubscribe from this group and stop receiving emails from it, send an email to google-appengine+unsubscr...@googlegroups.com. To post to this group, send email to google-appengine@googlegroups.com. Visit this group at http://groups.google.com/group/google-appengine?hl=en. For more options, visit https://groups.google.com/groups/opt_out.
[google-appengine] Re: Task Queue - Transient Errors
Hello Santiago, Transient errors happen sometimes, there's not a whole lot you can do to prevent or reduce them. One mitigating strategy is to attempt to add a task; if you get an error, sleep for 500ms - 1sec and try again. Here's some more discussion on the topic: http://grokbase.com/t/gg/google-appengine/12ck1skbqy/transient-error-when-attempting-to-add-task-to-queue-fails-on-retry - -Vinny P Technology Media Advisor Chicago, IL @GOV on AppDotNet: https://alpha.app.net/gov On Thursday, April 18, 2013 9:21:41 AM UTC-5, Santiago wrote: Hi everyone, In the last days I've been seeing on my application a lot of Transient Errors when I try to use task queues. is this happening to anyone else? do you know what actually happen when this error is raised? all i get from GAE documentation is There was a transient error while accessing the queue. Please try again later but I'm not very confortable about having my logs flooded with this! thanks! -- You received this message because you are subscribed to the Google Groups Google App Engine group. To unsubscribe from this group and stop receiving emails from it, send an email to google-appengine+unsubscr...@googlegroups.com. To post to this group, send email to google-appengine@googlegroups.com. Visit this group at http://groups.google.com/group/google-appengine?hl=en. For more options, visit https://groups.google.com/groups/opt_out.
Re: [google-appengine] Re: Webpages are not updating properly after a datastore operation performed
On Thursday, April 18, 2013 1:27:00 AM UTC-5, Nijin Narayanan wrote: The Page is redirecting after the datastore operation performed. Something like this: db.delete(key) self.redirect(new_page) Does this will redirect the page before completing the delete operation ? The answer is a resounding and firm Maybe. Operations on the datastore take place in two parts: the commit phase, and the apply phase. You can read more about it at https://developers.google.com/appengine/docs/python/datastore/overview#Datastore_Writes_and_Data_Visibility but the short version is that datastore operations return after the commit phase, not after the apply phase. You may have told the datastore to delete an object, but it'll take some milliseconds for that operation to execute even after the delete op has returned. You might need to add an artificial delay to your code, or manually account for its' deletion. - -Vinny P Technology Media Advisor Chicago, IL -- You received this message because you are subscribed to the Google Groups Google App Engine group. To unsubscribe from this group and stop receiving emails from it, send an email to google-appengine+unsubscr...@googlegroups.com. To post to this group, send email to google-appengine@googlegroups.com. Visit this group at http://groups.google.com/group/google-appengine?hl=en. For more options, visit https://groups.google.com/groups/opt_out.
[google-appengine] Access to GAE Apps by users in Sudan
Hi, We develop a mapping app for humanitarian relief running on AppEngine (about.activityinfo.org) in the EU region. Unfortunately, it looks like humanitarian organizations operating in Sudan are not able to access the application due to legal restrictions, which I'm assuming refers to the sanctions currently in place against Sudan. 403. That’s an error.) Your client does not have permission to get URL / from this server. (Client IP address: 105.239.146.4) We're sorry, but this service is not available in your country. That’s all we know Is it possible to make an exception for this application? I believe the app falls under the exceptions discussed here: http://www.america.gov/st/democracyhr-english/2010/March/20100312160116dmslahrellek0.7673914.html I've emailed le...@google.com with no response to date. Best, Alex -- You received this message because you are subscribed to the Google Groups Google App Engine group. To unsubscribe from this group and stop receiving emails from it, send an email to google-appengine+unsubscr...@googlegroups.com. To post to this group, send email to google-appengine@googlegroups.com. Visit this group at http://groups.google.com/group/google-appengine?hl=en. For more options, visit https://groups.google.com/groups/opt_out.
[google-appengine] Problems sending mail
Hello,
I've got a problem sending a mail from my GAE project. here is my code:
Properties props = new Properties();
Session session = Session.getDefaultInstance(props, null);
String msgBody = ...;
try {
Message msg = new MimeMessage(session);
msg.setFrom(new InternetAddress(ad...@example.com, Example.com
Admin));
msg.addRecipient(Message.RecipientType.TO,new InternetAddress(
u...@example.com, Mr. User));
msg.setSubject(Your Example.com account has been activated);
msg.setText(msgBody);
Transport.send(msg);
} catch (AddressException e) {
} catch (MessagingException e) {
}
I get errors like:
javax.mail.Message is not supported by Google App Engine's Java runtime
environment
What's the problem here?
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[google-appengine] Re: App Engine access from Sudan
Is it possible to seek an exception for this restriction? We run an app for humanitarian organizations on Google App Engine, and I believe that our app falls under the exceptions discussed here: http://www.america.gov/st/democracyhr-english/2010/March/20100312160116dmslahrellek0.7673914.html Alex On Wednesday, March 30, 2011 11:31:39 PM UTC+2, Muhammad Alkarouri wrote: Many thanks, Ikai. For anybody coming across this post later, the issue is discussed further in GAE issue http://code.google.com/p/googleappengine/issues/detail?id=3263 On Mar 30, 6:40 pm, Ikai Lan (Google) ika...@google.com wrote: Yes, there are export control laws between the United States and Sudan. I'm not a lawyer, so I can't go into many more details about this. 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, Mar 29, 2011 at 12:01 PM, Muhammad Alkarouri malkaro...@gmail.comwrote: I have an app in appengine that seems to not be accessible to users from Sudan, with some sort of error message. Is there any restriction for Sudan users from accessing appengine based sites? If there is, I would imagine that it is some interpretation of US sanctions which apply to Sudan among other countries including Cuba and Iran. So if there is anything like that, please tell us. To clear off any potential misunderstanding, I am British and UK- based. The app is not being developed or funded from Sudan. -- 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-a...@googlegroups.comjavascript:. To unsubscribe from this group, send email to google-appengi...@googlegroups.com javascript:. 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. To unsubscribe from this group and stop receiving emails from it, send an email to google-appengine+unsubscr...@googlegroups.com. To post to this group, send email to google-appengine@googlegroups.com. Visit this group at http://groups.google.com/group/google-appengine?hl=en. For more options, visit https://groups.google.com/groups/opt_out.
[google-appengine] Re: Task Queue - Transient Errors
I've noticed this same issue on an inconsistent basis. On Thursday, April 18, 2013 7:21:41 AM UTC-7, Santiago wrote: Hi everyone, In the last days I've been seeing on my application a lot of Transient Errors when I try to use task queues. is this happening to anyone else? do you know what actually happen when this error is raised? all i get from GAE documentation is There was a transient error while accessing the queue. Please try again later but I'm not very confortable about having my logs flooded with this! thanks! -- You received this message because you are subscribed to the Google Groups Google App Engine group. To unsubscribe from this group and stop receiving emails from it, send an email to google-appengine+unsubscr...@googlegroups.com. To post to this group, send email to google-appengine@googlegroups.com. Visit this group at http://groups.google.com/group/google-appengine?hl=en. For more options, visit https://groups.google.com/groups/opt_out.
[google-appengine] Memcache very slow
Hi, I have an App (online gaming) with over a million requests a day - we use objectify4, which in turn uses memcache for caching datastore objects. Usually, memcache is very quick - 10 ms per request. But occasionally (once a day a bit, once a week very significatnly), memcache becomes very very slow, from 50-100 up to several hundred milliseconds - which slows down my requests that get objects from objectify and memcache down quite a bit (from around 500 ms per request with good memcache to up to 6 seconds with slow memcache) and makes the game unplayable. So, did anybody else also experience this issues, and is there anything from developer side that can be done against that (i do not really want to abadon objectify) or is this just a flaw that Google App Engine Users have to live with like suggested in https://groups.google.com/forum/?fromgroups=#!topic/google-appengine/3gdJKrh5DUQ? So how to archieve, constant and predictable memcache performane? thank you, Gerald -- You received this message because you are subscribed to the Google Groups Google App Engine group. To unsubscribe from this group and stop receiving emails from it, send an email to google-appengine+unsubscr...@googlegroups.com. To post to this group, send email to google-appengine@googlegroups.com. Visit this group at http://groups.google.com/group/google-appengine?hl=en. For more options, visit https://groups.google.com/groups/opt_out.
[google-appengine] Re: security issue (strange behavior)
actually estimated jeff.. this was one of my first GAE project that I built, and now with using specialized javascript frameworks and using MVC architecture (ExtJS4, Backbone, others), I have not really watched problems like with this simple application unsecure, but I find it interesting the observed effects, to take them into account in my other projects ..and of course overcome these, because in the GAE world all consumptions and costs, must be controlled some free samples http://goo.gl/wVU6O a first integration with ExtJS OAuth2.0 protocol http://goo.gl/SLu4G working with spreadsheets http://goo.gl/N6W4p GAE in action project Comments like this should also be considered : http://www.carlosble.com/2010/11/goodbye-google-app-engine-gae/ and although I love the GAE philosophy .. I see betting a lot for startups that for professional business developments .. and forums like this, are the ideal place to develop, share and overcome these challenges.. so any help is welcome.. best regards @Mlaynes -- You received this message because you are subscribed to the Google Groups Google App Engine group. To unsubscribe from this group and stop receiving emails from it, send an email to google-appengine+unsubscr...@googlegroups.com. To post to this group, send email to google-appengine@googlegroups.com. Visit this group at http://groups.google.com/group/google-appengine?hl=en. For more options, visit https://groups.google.com/groups/opt_out.
[google-appengine] Praise for the new billing system...
My appengine app with billing enabled doesn't use the full $2.10 a week and still serves a decent amount of traffic. I know we are just talking about pennies here, but as a self-funded startup, I really appreciate the 1.7.7 feature of only being billed for the resources that I actually use. Thanks appengine team, keep up the good work! best, jon -- You received this message because you are subscribed to the Google Groups Google App Engine group. To unsubscribe from this group and stop receiving emails from it, send an email to google-appengine+unsubscr...@googlegroups.com. To post to this group, send email to google-appengine@googlegroups.com. Visit this group at http://groups.google.com/group/google-appengine?hl=en. For more options, visit https://groups.google.com/groups/opt_out.
[google-appengine] High latency and exiting processes with HRD application
Hi, Since about 3 PM, basically every request to my application (sketchport-hrd) has been timing out with one of these two messages: Request was aborted after waiting too long to attempt to service your request. A problem was encountered with the process that handled this request, causing it to exit. This is likely to cause a new process to be used for the next request to your application. (Error code 121) I see a spike in the latency graphs on https://code.google.com/status/appengine, so I'm assuming there is a system wide problem. Is anybody else seeing this problem? Thanks, Sean -- You received this message because you are subscribed to the Google Groups Google App Engine group. To unsubscribe from this group and stop receiving emails from it, send an email to google-appengine+unsubscr...@googlegroups.com. To post to this group, send email to google-appengine@googlegroups.com. Visit this group at http://groups.google.com/group/google-appengine?hl=en. For more options, visit https://groups.google.com/groups/opt_out.
[google-appengine] Anyone else have all their backends taken down @ 6pm EST today and NOT brought back up ?
I have multiple apps that use a background thread. These are used to rotate game boards on MMO puzzle games for Android. At around 6pm EST today, ALL of my backends were stopped. However the Admin interface reported them as UP. They were NOT restarted. Example log message: 2013-04-19 17:59:51.979 Process terminated because the backend took too long to shutdown Did anyone else have this happen ? -- You received this message because you are subscribed to the Google Groups Google App Engine group. To unsubscribe from this group and stop receiving emails from it, send an email to google-appengine+unsubscr...@googlegroups.com. To post to this group, send email to google-appengine@googlegroups.com. Visit this group at http://groups.google.com/group/google-appengine?hl=en. For more options, visit https://groups.google.com/groups/opt_out.
[google-appengine] Re: Memcache very slow
Memcache used to be fast, fast, fast. FWIW, we've turned off memcaching on most of our NDB models because a datastore key.get() is as fast as a typical memcache.get() and without the NDB memcaching, we don't incur the memcache (possible) miss followed by the key.get(). j On Thursday, 18 April 2013 15:28:47 UTC-6, Gerald N wrote: Hi, I have an App (online gaming) with over a million requests a day - we use objectify4, which in turn uses memcache for caching datastore objects. Usually, memcache is very quick - 10 ms per request. But occasionally (once a day a bit, once a week very significatnly), memcache becomes very very slow, from 50-100 up to several hundred milliseconds - which slows down my requests that get objects from objectify and memcache down quite a bit (from around 500 ms per request with good memcache to up to 6 seconds with slow memcache) and makes the game unplayable. So, did anybody else also experience this issues, and is there anything from developer side that can be done against that (i do not really want to abadon objectify) or is this just a flaw that Google App Engine Users have to live with like suggested in https://groups.google.com/forum/?fromgroups=#!topic/google-appengine/3gdJKrh5DUQ ? So how to archieve, constant and predictable memcache performane? thank you, Gerald -- You received this message because you are subscribed to the Google Groups Google App Engine group. To unsubscribe from this group and stop receiving emails from it, send an email to google-appengine+unsubscr...@googlegroups.com. To post to this group, send email to google-appengine@googlegroups.com. Visit this group at http://groups.google.com/group/google-appengine?hl=en. For more options, visit https://groups.google.com/groups/opt_out.
