Boris - Quote from http://ofbiz.apache.org/docs/services.html
The scheduler is a multithreaded component with a single thread used for job managing/scheduling and separate threads used for invocation of each service. When a job is scheduled to run, the scheduler will call the service dispatcher associated with the job to invoke the service in its own thread. This will prevent long or time consuming jobs from slowing down other jobs in the queue. I hear your intent to limit JobScheduler to use a single thread for a service; I have to admit i did not need to use JobScheduler that way; and will wait for framework experts to comment; - Regards Sakthi On 4/19/12, Boris Hamanov <[email protected]> wrote: > Hi Integrin > > It looks to me that Job Scheduler could be suitable as it works like a queue > already. No need to reinvent the hot water :) I could safe myself some work > and a lot of testing there. > > Anyone more knowledgable about how the Job Scheduler works? > What happens it you put the same service several times inside? Any way to > specify that only one thread should be devoted to one service name? > > -----Original Message----- > From: Integrin > Date: 19 април 2012 г. 20:41 ч. > To: [email protected] > Subject: Re: Job scheduler as a message queue > > Boris - > > Job Scheduler be used for timed invocation of services and perhaps not > suitable for this usecase; > > I'm guessing, you need a queue data-structure to hold the registration > requests and a dedicated worker thread clearing off the queue; > > - Regards > > On 4/19/12, Boris Hamanov <[email protected]> wrote: >> Say, a user registers on my site, through a form; I am running a service >> that does the registration. >> >> Now suppose 10 users use the form simultaneously and submit their >> registration at approximately the same time. My service is called 10 >> times. >> I want to guarantee that one and ONLY ONE instance of my >> registration service runs at any given time. >> >> I need that because in my specific scenario each subsequent registration >> depends on the previous ones. >> >> Can I make my service asynchronous and use the job scheduler to achieve my >> goal? >> >> >> Thanks in advance ;) >> > > -- > Sent from my mobile device > > -- Sent from my mobile device
