well, my suggestion was to avoid spawning a new thread for each request. option 4 is much easier to handle, has less potential multi-threading issues, is more robust and consume less resources.
On Wed, May 5, 2010 at 10:22 PM, jake <[email protected]> wrote: > Thanks for the input everyone, I'll probably go with Egozi's > suggestion and try using multiple threads, I don't know if I need a > queue yet since the number of requests is relatively low, I might have > to when the actions starts picking up. Hopefully I won't kill my site > by spawning too many threads. > > Thanks, > Jake > > On May 4, 5:18 am, Jason Meckley <[email protected]> wrote: > > any time I need offline processing I use a windows service with a > > service bus communicating between the web and service. I favor > > Rhino.ServiceBus, but I hear NServiceBus and MassTransit have the same > > feature set. > > > > On May 4, 2:07 am, Ken Egozi <[email protected]> wrote: > > > > > > > > > > > > > I'd store the job in some form of a persistent queue (msmq, ESENT, > RDBMS, > > > filesystem, whatever), have SOMETHING (see below) process that offline, > and > > > move to "Done" queue. Then have another page serve the "Done" stuff to > the > > > users. > > > > > as for the offline processor - you have three main options: > > > 1. spawn a thread for each "process" request - this could be dangerous > from > > > stability standpoint (threads can be aborted by the environment) and > will > > > probably create too many threads anyway > > > 2. If you have access to the machine and can setup a scheduled task > that > > > process the queue - that's cool > > > 3. Expose an endpoint in the web app, that will get pinged every X > seconds > > > from a scheduled task at a computer you CAN control, initiating > "process up > > > to Y items from the queue" on every call. > > > 4. setup a single worker thread spawned on App_Start, that will wait > for a > > > ManualResetEvent or something from the queue operation to kick in. > > > > > I'd avoid 1. > > > 4. is pretty straightforward and self maintaining if you do the > > > multithreading part well enough. Get someone who knows his way there > for > > > code review as it could turn to nasty stuff easily. > > > 2. is the most scalable option, but you need to make sure the scheduled > task > > > (or windows service, whatever) do not get stuck, gets restarted if it's > > > blown away or something, etc. > > > 3. is pretty easy, but is does require some other machine to ping the > app, > > > and you're back the need to make sure this runs even when you're on > vacation > > > or something. > > > > > On Tue, May 4, 2010 at 5:50 AM, John Simons < > [email protected]>wrote: > > > > > > Jake, > > > > > > This is the way I previously dealt with this kind of situation: > > > > - On the controller action method *spawn* another thread and do the > report > > > > generation there (see note about this) or if you have the resources, > do it > > > > out of iis process. > > > > - Tell the user that the report is being generated (wait 10min blah > blah > > > > ...) and maybe provice a url to the user to retrieve the report or > email the > > > > user the url once report has been created. > > > > - If the report is not user specific, provide a page with a list of > > > > generated reports. > > > > > > Regarding *spawn* another thread in iis process, be aware that when > an iis > > > > app pool refresh occurs, spawn threads are aborted and it could leave > your > > > > report generation in an unknown state hence the reason to do it out > of iis > > > > process. > > > > > > Let me know if you need more details. > > > > > > Cheers > > > > John > > > > > > ------------------------------ > > > > *From:* jake <[email protected]> > > > > *To:* Castle Project Users <[email protected]> > > > > *Sent:* Tue, 4 May, 2010 10:20:17 AM > > > > *Subject:* Job processing with monorail > > > > > > I have a page that generates a PDF report and serves it in the > > > > response. Overtime, the report has gotten more and more complex to > > > > the point that it sometimes takes a while to generate. I'd like to > > > > create a job processing class that I can use so that when users kick > > > > off the process I can just tell them to check back in 5 mins when > it's > > > > ready. It's inevitable that the report will start timing out because > > > > of the amount of content the customer wants. What would be the best > > > > way to tackle this, using Monorail of course? I'd like to keep all > > > > the code in the web app if I could. > > > > > > Thanks, > > > > Jake > > > > > > -- > > > > You received this message because you are subscribed to the Google > Groups > > > > "Castle Project Users" group. > > > > To post to this group, send email to > [email protected] > > > > . > > > > To unsubscribe from this group, send email to castle-project-users+ > > > > [email protected]. > > > > For more options, visit this group at > > > >http://groups.google.com/group/castle-project-users?hl=en. > > > > > > -- > > > > You received this message because you are subscribed to the Google > Groups > > > > "Castle Project Users" group. > > > > To post to this group, send email to > [email protected] > > > > . > > > > To unsubscribe from this group, send email to > > > > [email protected]<castle-project-users%[email protected]><castle-project-users%2Bun > [email protected]> > > > > . > > > > For more options, visit this group at > > > >http://groups.google.com/group/castle-project-users?hl=en. > > > > > -- > > > Ken Egozi. > http://www.kenegozi.com/bloghttp://www.delver.comhttp://www.musicglue...הכנס > הקהילתי הראשון למפתחי דוטנט - בואו בהמוניכם > > > > > -- > > > You received this message because you are subscribed to the Google > Groups "Castle Project Users" group. > > > To post to this group, send email to > [email protected]. > > > To unsubscribe from this group, send email to > [email protected]<castle-project-users%[email protected]> > . > > > For more options, visit this group athttp:// > groups.google.com/group/castle-project-users?hl=en. > > > > -- > > You received this message because you are subscribed to the Google Groups > "Castle Project Users" group. > > To post to this group, send email to > [email protected]. > > To unsubscribe from this group, send email to > [email protected]<castle-project-users%[email protected]> > . > > For more options, visit this group athttp:// > groups.google.com/group/castle-project-users?hl=en. > > -- > You received this message because you are subscribed to the Google Groups > "Castle Project Users" group. > To post to this group, send email to [email protected] > . > To unsubscribe from this group, send email to > [email protected]<castle-project-users%[email protected]> > . > For more options, visit this group at > http://groups.google.com/group/castle-project-users?hl=en. > > -- Ken Egozi. http://www.kenegozi.com/blog http://www.delver.com http://www.musicglue.com http://www.castleproject.org http://www.idcc.co.il - הכנס הקהילתי הראשון למפתחי דוטנט - בואו בהמוניכם -- You received this message because you are subscribed to the Google Groups "Castle Project Users" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/castle-project-users?hl=en.
