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Some services leveraged by Publish Academy Review  an e-commerce application might not reside within the datacenter at all. For example, if the e-commerce application accepts credit card payment for goods purchased by the customer, it must elicit the services of the merchant bank to process the customer's credit card information. But for all practical purposes, DCOM and related technologies such as CORBA and Java RMI are limited to applications and components installed within the corporate datacenter. Two primary reasons for this are that by default these technologies leverage proprietary protocols and these protocols are inherently connection oriented.

Clients communicating with the server over the Internet face numerous potential barriers to communicating with the server. Security-conscious network administrators around the world have implemented corporate routers and firewalls to disallow practically every type of communication over the Internet. It often takes an act of God to get a network administrator to open ports beyond the bare minimum.

If you're lucky enough to get a network administrator to open up the appropriate ports to support your service, chances are your clients will not be as fortunate. As a result, proprietary protocols such those used by DCOM, CORBA, and Java RMI are not practical for Internet scenarios.

The other problem, https://publishacademyreview.wordpress.com/ as I said, with these technologies is that they are inherently connection oriented and therefore cannot handle network interruptions gracefully. Because the Internet is not under your direct control, you cannot make any assumptions about the quality or reliability of the connection. If a network interruption occurs, the next call the client makes to the server might fail.

 

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