Stefan Nicol

Hello everybody,

In my assignment I have as requirement for performance: "99 percent of all messages to be constructed and sent in three seconds
or less to the IP address of the API server".

How can I tackle this?

One way to improve performance is through cache. So , I was thinking to propose Coherence as L2 cache and Oracle TopLink Grid  between the EclipseLink JPA and Coherence.

Does it sounds good for you? It's not over-killing?

Another question regarding this requirement: If I give a specific H/W profile how can I prove that it will fulfill the performance requirement from above? Also over-sizing is bad.

Any advice is welcome. Thank you.

Stephan

K. Tsang wrote:

Stefan Nicol wrote:
The new added classes can not be in between some given BDM given classes ?

Why not? So long as the relationship to these added classes fulfill the outer domain classes.

So that means I still could add Auction class in the Class Diagram as I explain in the first post of this topic. And to make the relation of Seller to Bid over this new class , and not directly as is in the BDM.
It's not considered changing the business domain model, isn't it?

I ask to be sure. Thank you again.

Which assignment is this?

Gusher Oil.

You shouldn't need to "change the business domain model" especially the relationship.

You can surely add new classes to support the model or your design.

The new added classes can not be in between some given BDM given classes ? The multiplicity would be actually respected. But indirectly.

Thank you.

Hello everybody,

I have an asignment similar with Cade JustBuildIt example. It's about a company that is selling its products through auction.

The BDM is also similar with Cade example, only the AvailabilityNotice (Auction) is missing in mine. And in my BDM the Seller is asociated with the Bid, not as in the Cade example where Seller is asociated with the AvailabilityNotice.

I would add the AvailabilityNotice (or Auction) in my class diagram because I think is necessary.

But now my question is: Can I asociate the Seller with the new class AvailabilityNotice as Cade does in his example and also I found natural ?
Or should I stick with the relation given by the BDM and let the Seller associated with the Bid?

Thank You again.

Thank you for the quick reply.

1) assume the auctioned products are from the auctioning marketplace, meaning your SUD will get/send data from/to that marketplace in real time (or close to it)  

No, because products are belonging to SUD.

 You mention the marketplace is an actor in one of the use case. Is that use case about bidding and such?

Yes and that is "posting product for sale".

2) assume the products are separate, user bid on your SUD or at the marketplace

That could be a good tip. I have to think. So some products are sold over marketplace and other over the company own system. At the beginning I thought that this option doesn't make sense. Because why not to sold everything on marketplace. But for not to change the given use-case diagram I could assume this.

Hello everybody,

I am stuck. Maybe somebody can give me an advice.

In my  assignment I have to integrate with an  auctioning marketplace. This tells me  that the bidding is done there, on the auctioning marketplace system.

But at the same time there is a use-case specification where buyers can bid for product on my system (SUD).

I could assume that bidding can be done on both places: on SUD and also on auctioning marketplace. This would imply that after the buyer finish bidding on SUD the result has to be send also to the external auctioning  marketplace.

That means there would be an association between "auctioning marketplace" actor and the mentioned use-case.

BUT this association doesn't appear in the use-case overview although the actor "marketplace" is in association with another use-case.

How sounds for you this assumption? I'm not going too far? It's ok to extend use-cases and add interactions with another actor?

Thank You.

Hello everybody,

In my requirements there is just "128-bit encryption at a minimum" mentioned about security. And availability five nines.

Question is: should I show in my deployment diagram a firewall ? And if yes, should the firewall have a hot standby?

Thank you.

Stephan