Doddy Christiana Saputra

Hi guys,

If we know better about the design pattern, it will be usefull a lot for us to build the reusable software component like we want to achieve it, one of the famous pattern is singeleton and much of developer especially in web development until this time still confuse to implemented. Now i wanna to discuss the common usage of singeleton pattern in aspnet which always shown in development project. Lets rock and roll …

There may be numerous programming scenarios when we may need to restrict an
object to a single instance. Some of them are:

• A single instance of a mail server might be required to process all incoming
  mail requests.
• The Session object in ASP.NET is implemented using singleton pattern. That
  is why each user will have only one session instance accessible at any point
  of time.
• The Application object in ASP.NET is also singleton based. There is only
  one instance of the Application object for an entire application.
  We may need a single instance of a logging utility to process all logging
  requests in our application.

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Hallo folks … see you again in my sharing knowledge moment in my
development journal blogs,
i would like to share to all of you about the knowledge of creating the
domain architecture,
in this case i would like to create the WCF ( Windows Communication
Foundation ) especially for further purpose is
implement the SOA ( Software Oriented Architecture ).

I will separate the part of the knowledge become the trilogy knowledge
which are :

1. Introduction the Domain WCF or Web service
2. Introduction the Service Factory from The Pattern and Practise team to implement the WCF or Web service as a Domain Artifact model.
3. Sample implementation the WCF or Web service.

so..let’s try to rock’n roll …

Overview :
the application development in this era has already come to service
oriented architecture which is known by SOA, by using SOA
we implement the interoperability application architecture which avoid
the system operation platform or even the language
of application development and domain application as well. we using the
independence file format transferring or independence format that
allow every domain
application could leverage every programming functionality such as
procedure or method for IPO ( Input-Process-Output) processing
Because the original purpose of SOA is become a bridge of many platform
which cater the functionality of the application then the ser-
vice need the endpoint or even the contract which is tighten from one
service point to another service point or from one domain
application to another domain application but of course loosely
coupling architecture.

For further detail explanation i put some figure about the domain WCF :

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