Re: How-to implement the e-Commerce-System found in the "IDDD" book

There is no suc thing as fresh information.

On Monday, June 3, 2013, Mauro Servienti wrote:

> **
>
>
> But, if in your scenario makes sense to regenerate the order each time it
> is opened you can issue a query to the product BC, via a service exposed by
> the product BC using a dedicated read model for the order - product
> communication, in any case the order aggregate does not need the product
> aggregate for this task.
>
> The problem you have to face is: since you can totally isolate (different
> processes on different servers) BCs what happens when you query for an
> order and the product BC is not available?
>
> There are scenario in which makes sense that the order is available with
> stale information and other where you need all the time as much as possible
> fresh information and others where you _must_ have fresh information.
>
> .m
>
> -----Original Message-----
> From: [email protected] <javascript:_e({}, 'cvml',
> 'domaindrivendesign%40yahoogroups.com');> [mailto:
> [email protected] <javascript:_e({}, 'cvml',
> 'domaindrivendesign%40yahoogroups.com');>] On Behalf Of
> wonderfulworldofpingpong
> Sent: lunedì 3 giugno 2013 22.43
> To: [email protected] <javascript:_e({}, 'cvml',
> 'domaindrivendesign%40yahoogroups.com');>
> Subject: [domaindrivendesign] Re: How-to implement the e-Commerce-System
> found in the "IDDD" book
>
> I don't agree to this. Regenerating an order requires a query to the BC
> that contains the Product.
>
> > - Independency: Order-BC should not depend on the availability of the
> Product-BC to work;
>
> ------------------------------------
>
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>


-- 
Le doute n'est pas une condition agréable, mais la certitude est absurde.