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Open SOA: What is ESP, and what is its role in SOA?

Hong Anderson
Ranch Hand

Joined: Jul 05, 2005
Posts: 1936
I have never heard of ESP before. What is it, what are benefits of using ESP, and how does it relate to SOA?


SCJA 1.0, SCJP 1.4, SCWCD 1.4, SCBCD 1.3, SCJP 5.0, SCEA 5, SCBCD 5; OCUP - Fundamental, Intermediate and Advanced; IBM Certified Solution Designer - OOAD, vUML 2; SpringSource Certified Spring Professional
Mourouganandame Arunachalam
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Joined: Oct 29, 2008
Posts: 396
I think you are referring to ESB (Enterprise Service Bus). You can get more info @

http://en.wikipedia.org/wiki/Enterprise_service_bus

http://servicemix.apache.org/home.html


Mourougan
Open Source leads to Open Mind
Jeff. Davis
Author
Greenhorn

Joined: Jun 01, 2009
Posts: 20
I believe he's referring to Event Stream Processing (ESP), which is really just another term for Complex Event Processing (CEP). In my book I document the usage of Esper, which is an outstanding open source CEP implementation. How does CEP pertain to SOA? An excellent discussion of this is provided in this [url name="http://searchsoa.techtarget.com/news/article/0,289142,sid26_gci1243493,00.html"]article[/url].

In the book, I describe an approach to service-enable Esper so that it can receive events via a web services call (such as through SOAP, REST, JMS etc). While SOA brings with it many benefits, one of the downsides is how to manage a proliferation of services distributed throughout the cloud. If the services emit events to a CEP as they are invoked/consumed, this helps manage your services infrastructure by identifying when anything abnormal occurs. It can also provide critical insights as to what services are being used most, and by whom.

Hope that helps!

jeff
Mourouganandame Arunachalam
Ranch Hand

Joined: Oct 29, 2008
Posts: 396
Hi Kengkaj, Sorry I misunderstood the term.

Hi Davis, this is the first time I'm also hearing this term. New and useful info. Tks.
Hong Anderson
Ranch Hand

Joined: Jul 05, 2005
Posts: 1936
Jeff. Davis wrote:I believe he's referring to Event Stream Processing (ESP), which is really just another term for Complex Event Processing (CEP). In my book I document the usage of Esper, which is an outstanding open source CEP implementation. How does CEP pertain to SOA? An excellent discussion of this is provided in this [url name="http://searchsoa.techtarget.com/news/article/0,289142,sid26_gci1243493,00.html"]article[/url].

In the book, I describe an approach to service-enable Esper so that it can receive events via a web services call (such as through SOAP, REST, JMS etc). While SOA brings with it many benefits, one of the downsides is how to manage a proliferation of services distributed throughout the cloud. If the services emit events to a CEP as they are invoked/consumed, this helps manage your services infrastructure by identifying when anything abnormal occurs. It can also provide critical insights as to what services are being used most, and by whom.

Thanks, I'll have a look the article. So in short does it mean using ESP in SOA is for monitoring services?
Hong Anderson
Ranch Hand

Joined: Jul 05, 2005
Posts: 1936
Mourouganandame Arunachalam wrote:Hi Kengkaj, Sorry I misunderstood the term.

No problem .
 
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