GAE doesn't do application unload, it shuts down entire appserver instance whenever it wants no matter what application state is. I believe the only reason why GAE do this is to balance GAE cluster performance.
On Sun, Jul 4, 2010 at 22:31, Howard Lewis Ship <hls...@gmail.com> wrote: > It seems to me that just getting the root index page would accomplish > most of the goal: keeping the whole application from being unloaded. > Your spider will do that, plus keep the page pool filled with pages. > Did you experiment with just getting the root index page? > > On Sun, Jul 4, 2010 at 7:40 AM, Alex Kotchnev <akoch...@gmail.com> wrote: > > In addition to having the cron job (note, it's running on a compltely > > different box , not the cron from GAE), I also use Dmitry's ping service > to > > watch the response times (http://ping-service.appspot.com). My cron job > runs > > about every three minutes , fetching all pages on the site and in 24hrs > > consumes about 20-30% of the free quota. When the cron job is running, it > > keeps the application warm and ping-service reports that it's always > > available. If for some reason the cron job stops running, ping service > > immediately starts reporting intermittent issues w/ the application > failing > > to respond. > > > > This is my command looks like in the crontab: > > > > wget --spider --force-html http://foobar.com --random-wait -r --level=1 > > > > Regards, > > > > Alex K > > > > > > On Sat, Jul 3, 2010 at 9:29 AM, Dmitry Gusev <dmitry.gu...@gmail.com> > wrote: > > > >> Its discourged to use cron jobs (as well as task queues) to keep > >> application > >> worm on GAE. > >> Moreover this will not work anyway if your application have intensive > >> traffic. You will still have this issue. > >> > >> Currently GAE team is working feature to reserve application instances > and > >> this will cost money. > >> On Sat, Jul 3, 2010 at 17:20, Chris Mylonas <ch...@mrvoip.com.au> > wrote: > >> > >> > OK - that seems to work. > >> > GAE has a cron facility configurable with a cron.xml file in the > WEB-INF > >> > directory. > >> > I've set it to request the application root "/" every 2 minutes - > should > >> > keep things crisp. > >> > > >> > Have a good weekend, > >> > Cheers > >> > Chris > >> > > >> > > >> > On 03/07/2010, at 10:58 PM, Andreas Andreou wrote: > >> > > >> > i think someone in this list has mentioned setting up a cron job to > wget > >> >> the app so that the unloading never occurs. > >> >> > >> >> On Sat, Jul 3, 2010 at 15:19, Chris Mylonas <ch...@mrvoip.com.au> > >> wrote: > >> >> > >> >> Howdy, > >> >>> > >> >>> Well I haven't hit any snags yet. > >> >>> > >> >>> I'll try to put a few of the jumpstart examples on there to see how > >> they > >> >>> go. Sometime in the next week - ajaxformloop and some crud with > GAE's > >> >>> datastore (using JDO over JPA as it seems to be the preferred way > >> seeing > >> >>> as > >> >>> it's not a relational db). > >> >>> > >> >>> The only problem I've got at the moment is that whenever the app > hasn't > >> >>> been called for a while there is this message in the appengine admin > >> >>> logs: > >> >>> > >> >>> This request caused a new process to be started for your > application, > >> and > >> >>> thus caused your application code to be loaded for the first time. > This > >> >>> request may thus take longer and use more CPU than a typical request > >> for > >> >>> your application. > >> >>> > >> >>> And the request takes 8000ms - 10000ms to process - once the app is > >> >>> loaded > >> >>> it has fast responses as one would expect. At this stage I'm not > sure > >> >>> whether this is something within GAE that can be configured or some > >> >>> tapestry > >> >>> do-not-let-me-unload setting which I haven't encountered in my > tapestry > >> >>> devving. > >> >>> > >> >>> I'll post further once there's a bit more work done to it (or if > there > >> >>> are > >> >>> still the problems you mentioned) > >> >>> > >> >>> Thanks for your feedback, > >> >>> Cheers > >> >>> Chris > >> >>> > >> >>> > >> >>> > >> >>> On 03/07/2010, at 8:22 PM, Robin Komiwes wrote: > >> >>> > >> >>> Hi! > >> >>> > >> >>>> > >> >>>> Good news! I don't see any workaround to use another XML parser > than > >> >>>> woodstox. Does it means that there no compatibility issue anymore? > It > >> >>>> would > >> >>>> be a very good point in order to resolve all issues related to > HTML5 > >> and > >> >>>> entities resolutions problems. > >> >>>> > >> >>>> On Sat, Jul 3, 2010 at 3:09 AM, Chris Mylonas <ch...@mrvoip.com.au > > > >> >>>> wrote: > >> >>>> > >> >>>> Hi, > >> >>>> > >> >>>>> > >> >>>>> I'm pretty new around here but thought I would let you know that > this > >> >>>>> post > >> >>>>> by Christophe Dufour works. > >> >>>>> > http://blog.dooapp.com/running-tapestry5-maven-on-google-app-engine > >> >>>>> > >> >>>>> You can check it out here: http://tapgae1.appspot.com/ > >> >>>>> It's pretty much the default tapestry5 maven archetype with a link > to > >> >>>>> Christophe's instructions. > >> >>>>> > >> >>>>> I googled for tapestry appengine and there didn't appear to be any > >> >>>>> recent > >> >>>>> success stories so thought I'd let you all know. > >> >>>>> > >> >>>>> Cheers > >> >>>>> Chris > >> >>>>> > >> >>>>> > >> >>>>> > >> >>> > --------------------------------------------------------------------- > >> >>> To unsubscribe, e-mail: users-unsubscr...@tapestry.apache.org > >> >>> For additional commands, e-mail: users-h...@tapestry.apache.org > >> >>> > >> >>> > >> >>> > >> >> > >> >> -- > >> >> Andreas Andreou - andy...@apache.org - http://blog.andyhot.gr > >> >> Tapestry PMC / Tacos developer > >> >> Open Source / JEE Consulting > >> >> > >> > > >> > > >> > --------------------------------------------------------------------- > >> > To unsubscribe, e-mail: users-unsubscr...@tapestry.apache.org > >> > For additional commands, e-mail: users-h...@tapestry.apache.org > >> > > >> > > >> > >> > >> -- > >> Dmitry Gusev > >> > >> AnjLab Team > >> http://anjlab.com > >> > > > > > > -- > Howard M. Lewis Ship > > Creator of Apache Tapestry > > The source for Tapestry training, mentoring and support. Contact me to > learn how I can get you up and productive in Tapestry fast! > > (971) 678-5210 > http://howardlewisship.com > > --------------------------------------------------------------------- > To unsubscribe, e-mail: users-unsubscr...@tapestry.apache.org > For additional commands, e-mail: users-h...@tapestry.apache.org > > -- Dmitry Gusev AnjLab Team http://anjlab.com
