SOA / Web Services / Java

A Technology Blog

Adapter and Façade – The Design Patterns of SOA

Posted by Vivek on August 6, 2011

Adapter:

This design pattern helps to take advantage of the existing technology or aplications. One of the principles of SOA is reuse. Adapter fosters reusability by integrating legacy or packaged applications with your ecosystem. Application built using mainframe technologies like CICS, COBOL etc still have a place in today’s IT infrastructure. Capabilities and usage of packaged applications like Siebel CRM, Peoplesoft HRM, Portal billing, SAP CRM etc are not limited because of technical implementations. One of the well known adapters is JCA (Java Connector Architecture) adapter.

Façade:

A right level of granularity is essential when designing services. Services, in context of SOA, can be considered as a unit of logic. SOA recommeds use of coarse granular services. Reason is simple – It avoids making multiple calls to service and hence increases network throughput. But sometimes it is difficult to avoid designing and developing low-level services (mostly utility services). Façade helps in providing coarse granurality by encapsulating low level services. Façade pattern also abstracts client from the implementation details of a service. Most of the times, changes in a service does not impact client because of usage of Façade pattern.

 

 

Advertisements

One Response to “Adapter and Façade – The Design Patterns of SOA”

  1. Fantastic Site…

    [..] I Stumbled accross this great blog post and guessed you peeps would like it.[..]…

    Like

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s

 
%d bloggers like this: