Looks like what you need is the job queue. Take a look at Queue::DBI (https://metacpan.org/module/Queue::DBI) - simpler TheSchwartz (https://metacpan.org/module/TheSchwartz)
Sergey 2012/8/20 James R. Leu <j...@mindspring.com> > Hello all, > > Problem description > =================== > I have a catalyst application server that responds > to 'API' requests for web applications via XHTMLRequests. > Sometimes the requests are timing out due to the backend > database queries taking too long. I'm looking for ways to > work around this and prevent the 'API' requests from > timing out. > > I know some of the possible resolutions to this are > - fix the queries > - fix the database > - frontend the RDBMS with NoSQL > > I'm working towards those fixes, but they are long > term projects, I'm looking for an interim solution. > That would notify the web application that it will > need to come back later for the response (ie decouple > request handling from the actual request/response). > > My attempt > ========== > In my handler I fork a child process. > > In the parent I send a response with a > 'job id' so the web application knows > to poll the 'API' for completion. > > In the child I close the IO socket so it cannot send > a response and then let it finish processing the > request, but it looks like I've lost my database > connections so the request fails. > > My wish > ======= > What I would like to do is avoid the fork and instead > have the handler send an early response to the > web application and then finish processing the request > and not try to send a response when done. > > Is there a common term for what I'm trying to do > like continuation or something like that? > Has anyone already done this? > > Thank you for your time. > -- > James R. Leu > j...@mindspring.com > > _______________________________________________ > List: Catalyst@lists.scsys.co.uk > Listinfo: http://lists.scsys.co.uk/cgi-bin/mailman/listinfo/catalyst > Searchable archive: > http://www.mail-archive.com/catalyst@lists.scsys.co.uk/ > Dev site: http://dev.catalyst.perl.org/ > >
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