Hi Isuru, any comment on this ? :-) On Thu, Aug 18, 2016 at 10:54 AM, Rushmin Fernando <[email protected]> wrote:
> It depends on the applications, users invoke Isuru. > > If users invoke all the apps then we end up fetching all the apps by the > handler instances for the apps (synapse APIs). ( A handler instance only > fetched and stores only one app instance) > > In the current implementation the fetch happens on demand. > > > On Thu, Aug 18, 2016 at 9:18 AM, Isuru Udana <[email protected]> wrote: > >> Hi Rushmin, >> >> Do we need to fetch domain objects from the database for all the >> applications or is it only for a set of applications ? >> >> >> >> On Tue, Aug 16, 2016 at 1:35 PM, Rushmin Fernando <[email protected]> >> wrote: >> >>> >>> In App Manager we use carbon mediation engine as the gateway. Thus the >>> business logic is implemented in few handlers. >>> >>> In order to code business logic, we need to fetch domain objects from >>> the database via a service. The primary domain object the "webapp' object. >>> >>> (Please see the attached image) >>> >>> In the current implementation, we have made the webapp object, an >>> instance variable of the handlers. Since the handlers are instantiated per >>> API (represents an app in our case), this works fine. >>> >>> Upon the first call to the app, we fetch the relevant webapp object and >>> store it as the aforementioned instance variable. >>> >>> Since there are more than one handlers which need to deal with the >>> webapp object we need to do above step in each of those handlers. >>> >>> We are thinking of having an init handler which does the service call >>> and fetch the domain object and share it with the other handlers in the >>> chain. The purspose of evaluating this is to, increase the code >>> maintainability and improve the performance to some extent. >>> >>> In order to do that we need to have the domain object in the message >>> context. But then again consume a lot of memory when there is a high load. >>> >>> One solution to above issue to create a new thin domain object with only >>> the necessary fields for the gateway. >>> >>> Thoughts please ? >>> >>> >>> >>> -- >>> *Best Regards* >>> >>> *Rushmin Fernando* >>> *Technical Lead* >>> >>> WSO2 Inc. <http://wso2.com/> - Lean . Enterprise . Middleware >>> >>> mobile : +94772891266 >>> >>> >>> >> >> >> -- >> *Isuru Udana* >> Technical Lead >> WSO2 Inc.; http://wso2.com >> email: [email protected] cell: +94 77 3791887 >> blog: http://mytecheye.blogspot.com/ >> > > > > -- > *Best Regards* > > *Rushmin Fernando* > *Technical Lead* > > WSO2 Inc. <http://wso2.com/> - Lean . Enterprise . Middleware > > mobile : +94772891266 > > > -- *Best Regards* *Rushmin Fernando* *Technical Lead* WSO2 Inc. <http://wso2.com/> - Lean . Enterprise . Middleware mobile : +94772891266
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