Hi Rahul, About loading request/performance, there're lots of discussions that you can find in the groups, please just try google it.
Here are some notes based on reading those. Latency causes by 1- time to start new JVM 2- time to load your application To reduce load time by 1) others star request to a) pay to reserve JVM b) request Google to load your app before start dispatch request to that instance c) accept the situation For 2) we try to a- try to use/replace frameworks with light-weight ones: datastore access framework, MVC framework,... b- try to limit calculation in your index page to alleviate the impact of loading request c- design your object model based on your need, so that you do calculation at insert time, not at query time. For example, in my app, if I want to report on year and quarter, then I have 5 summary "record" for those, instead of querying and computing those d- caching result. For example, If I know 1 one 5 piece of data above would be read frequently, then I will read those 5 all, and put into memcache for later use ... So it's application-specific, I don't know if each of above can help you. But only you who can know if which one of your code can be cached and how... HTH On Sun, May 23, 2010 at 11:37 AM, Rahul <rahul.jun...@gmail.com> wrote: > Chau, > > Thanks for pointing to the link. I did go through the link and i > think, what i thought was right. > Also i was going through the following point in the section you > provided : "How can I speed up loading requests? " and the second > point mentioned is "Share expensive initialization between JVMs. For > example, put data which is expensive to read or compute into memcache, > where it can be quickly read by other JVMs during startup." so in this > scenario where do you load this memcache so that it can be shared > between the jvm instances. > > Any pointers or clues highly appreciated. > > Thanks, > Rahul > > On May 22, 10:51 pm, Chau Huynh <cmhu...@gmail.com> wrote: > > It seems like loading request... > http://code.google.com/appengine/kb/java.html#What_Is_A_Loading_Request > > > > > > > > On Sun, May 23, 2010 at 4:55 AM, Rahul <rahul.jun...@gmail.com> wrote: > > > I have an application running on appengine and no doubt it works > > > great. but when the application is not used for some time. it goes > > > very slow. > > > Suppose i don;t use the application for around 5 hours or so, then > > > next time when i try to use it, the response is very slow. Is there > > > any thing specific which i am missing in adding application to > > > appengine. > > > > > Any clues are pointers are highly appreciated. > > > > > Thanks, > > > Rahul > > > > > -- > > > You received this message because you are subscribed to the Google > Groups > > > "Google App Engine for Java" group. > > > To post to this group, send email to > > > google-appengine-j...@googlegroups.com. > > > To unsubscribe from this group, send email to > > > google-appengine-java+unsubscr...@googlegroups.com<google-appengine-java%2bunsubscr...@googlegroups.com> > <google-appengine-java%2bunsubscr...@googlegroups.com<google-appengine-java%252bunsubscr...@googlegroups.com> > > > > > . > > > For more options, visit this group at > > >http://groups.google.com/group/google-appengine-java?hl=en. > > > > -- > > You received this message because you are subscribed to the Google Groups > "Google App Engine for Java" group. > > To post to this group, send email to > google-appengine-j...@googlegroups.com. > > To unsubscribe from this group, send email to > google-appengine-java+unsubscr...@googlegroups.com<google-appengine-java%2bunsubscr...@googlegroups.com> > . > > For more options, visit this group athttp:// > groups.google.com/group/google-appengine-java?hl=en. > > -- > You received this message because you are subscribed to the Google Groups > "Google App Engine for Java" group. > To post to this group, send email to > google-appengine-j...@googlegroups.com. > To unsubscribe from this group, send email to > google-appengine-java+unsubscr...@googlegroups.com<google-appengine-java%2bunsubscr...@googlegroups.com> > . > For more options, visit this group at > http://groups.google.com/group/google-appengine-java?hl=en. > > -- You received this message because you are subscribed to the Google Groups "Google App Engine for Java" group. To post to this group, send email to google-appengine-j...@googlegroups.com. To unsubscribe from this group, send email to google-appengine-java+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-appengine-java?hl=en.
