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 <[email protected]> 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/AAAAAAAAC0E/hes2VQbBy7g/s1600/igguestbook_issue02.jpg> > > 2.- to try eliminate or diminish"Datastore Read Operations", we have > implemented using "memcache"..but as you will see, not happens something > better.. > > > <https://lh6.googleusercontent.com/-oDzPSHq2ak8/UXCmygZ3JDI/AAAAAAAAC0U/ofzLEEBzwyY/s1600/igguestbook_issue03.jpg> > > > <https://lh6.googleusercontent.com/-a3tIKUzZFts/UXCm4PqlreI/AAAAAAAAC0c/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()); > List<String> ids = (List<String>) 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 [email protected]. > To post to this group, send email to [email protected]. > 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 [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/google-appengine?hl=en. For more options, visit https://groups.google.com/groups/opt_out.
