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Introduction to SOA & Web 2.0 Asst. Prof. Dr. Kanda Runapongsa - PowerPoint PPT Presentation

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Introduction to SOA & Web 2.0 Asst. Prof. Dr. Kanda Runapongsa Saikaew (krunapon@kku.ac.th) Department of Computer Engineering Khon Kaen University 10/12/09 1 Overview Gartner Top 10 Technologies SOA Definition Deriving Web

  1. Introduction to SOA & Web 2.0 Asst. Prof. Dr. Kanda Runapongsa Saikaew (krunapon@kku.ac.th) Department of Computer Engineering Khon Kaen University 10/12/09 1

  2. Overview  Gartner Top 10 Technologies  SOA Definition  Deriving Web Services from SOA  SOAP Web Services  REST Web Services  Examples of Real World Web Services  Examples of the Best Web 2.0 Software of 2010  Web 2.0 and SOA Relationship 2

  3. Gartner on Web Services  The industry analyst firm Gartner recently reported that  By 2006, 60 percent of the $527 billion IT professional services industry will be based on exploiting Web services and technology  By 2008, 80 percent of all software development would be based on SOA  This means that more than half of all software development will revolve around the Web technology 3

  4. Gartner Top Tech for 2007-2010  Green IT: Power efficiency  Unified communications: PBX => IP Telephony  Business process modeling  Top-level process services must be defined jointly by a set of roles  Fill a critical role as a compliment to SOA development 4

  5. Gartner Top Tech for 2007-2010  Metadata management  Enables optimization, abstraction and semantic reconciliation of metadata to support reuse, consistency, integrity and shareability  Virtualization 2.0  Improve IT resource utilization and increase the flexibility needed to adapt to changing requirements and workloads. 5

  6. Gartner Top Tech for 2007-2010  Mashup and composite apps.  By 2010, Web mashups will be the dominant model (80 percent) for the creation of composite enterprise applications  Web platform and WOA  Software as a Service (SaaS) is becoming a viable option in more markets 6

  7. Gartner Top Tech for 2007-2010  Computing fabric  Allow several blades to be merged operationally over the fabric, operating as a larger single system image that is the sum of the components from those blades  Real world Web  Information from the Web is applied to the particular location, activity or context in the real world. 7

  8. Gartner Top Tech for 2007-2010  Social software  Expect significant consolidation as competitors strive to deliver robust Web 2.0 offerings to the enterprise  Social software technologies will increasingly be brought into the enterprise to augment traditional collaboration 8

  9. SOA Definition  SOA is an architectural style whose goal is to achieve loose coupling among interacting software agents  As we build more software systems, we see similar situations and patterns  Naturally, we want to reuse the functionality of existing systems rather than building them from scratch 9

  10. SOA Tiers and Components 10

  11. Service Definition  A service is a unit of work done by a service provider to achieve desired end results for a service consumer  Both provider and consumer are roles played by software agents on behalf of their owners  An agent is a program acting on behalf of a person or organization 11

  12. Why do We Need a Service?  We want experts to do work for us  We are not experts in everything  Consuming a service is usually cheaper and more effective than doing the work ourselves 12

  13. 13

  14. Deriving Web Services from SOA  A Web service is a SOA with at least the following additional constraints  Interfaces must be based on Internet protocols such as HTTP, FTP, and SMTP  Except for binary data attachment, messages must be in XML 14

  15. Two Styles of Web Services  SOAP web services  Except for binary data attachment, messages must be carried by SOAP  The description of a service must be in WSDL  REST web services  A REST web service is an SOA based on the concept of “resource”  A resource is anything that has a URI 15

  16. SOAP Request <?xml version="1.0" encoding="UTF-8"?> <soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap /envelope/" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:ns1="http://duke.org/hello"> <soapenv:Body> <ns1:hello> <name>John</name> </ns1:hello> </soapenv:Body> </soapenv:Envelope> 16

  17. SOAP Response <?xml version="1.0" encoding="UTF-8"?> <soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap /envelope/" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:ns1="http://duke.org/hello"> <soapenv:Body> <ns1:helloResponse> <return>Hello lo John !</return> </ns1:helloResponse> </soapenv:Body> </soapenv:Envelope> 17

  18. REST Client for REST Service 18

  19. Amazon Web Services  http://aws.amazon.com 19

  20. Amazon Web Services List (1/2)  Infrastructure Services  Amazon Elastic Compute Cloud  Amazon SimpleDB  Amazon Simple Storage Service  Amazon Simple Queue Service  AWS Premium Support  Payments, Billing, and E-Commerce  Amazon Flexible Payments Service  Amazon DevPay  Amazon Fulfillment Web Service 20

  21. Amazon Web Services List (2/2)  On Demand Workforce  Amazon Mechanical Turk  Web Search and Information Services  Alexa Web Search  Alexa Web Information Service  Alexa Top Sites  Alexa Site Thumbnail 21

  22. Amazon Simple Storage Service (Amazon S3)  Amazon S3 is storage for the Internet. It is designed to make web-scale computing easier for developers.  Amazon S3 provides a simple web services interface that can be used to store and retrieve any amount of data, at any time, from anywhere on the web  It gives any developer access to the same highly scalable, reliable, fast, inexpensive data storage infrastructure that Amazon uses to run its web sites 22

  23. InfiniteBits :: FTP Access to Amazon S3  http://www.infinitebits.info/ 23

  24. InfiniteBits  InfiniteBits allows you to manage your S3 storage space exactly like a file system  Giving you capabilities that are not available through native Amazon S3  Upload/download files and folders  Move/rename files and folders  Transfer files over 5 GB  Set public/private permissions on files  Resume broken transfers  Subaccounts to give your customers their own logins & private file areas 24  $4.95 per month for 10GB transfer per month

  25. Overview  Gartner Top 10 Technologies  SOA Definition  Deriving Web Services from SOA  SOAP Web Services  REST Web Services  Examples of Real World Web Services  Examp mple les s of the Best Web 2.0 0 Software tware of 2010 2010  Web 2.0 and SOA Relationship 25

  26. The History of the Term Web 2.0  Web 2.0 was originally coined by O’Reily’s Dale Dougherty  It was to describe the forces behind the huge success of Internet companies and applications  Companies: Google, eBay, Amazon, iTunes  Applications: Wikipedia, BitTorrent 26

  27. What is Web 2.0?  Web 2.0 describes Web experiences that fundamentally engage users by  Allow them to participate in sharing information and enriching data freely  Readily offering their core functionality as open services to be composited or “mashed up” into new services and sites  Placing the Web at the center of the software experience both in terms of data location as well as where the software is 27

  28. Web 2.0 Architecture 28

  29. Web 2.0 Characteristics  Tim O’Reilly provides seven classic characteristics of Web 2.0 software  Web as platform  Harnessing collective intelligence  Data is the next Intel inside  End of the software release cycle  Lightweight programming models  Software above the level of a single device  Rich user experience 29

  30. Web as Platform  Software and services are now the same thing  The Web has become a computing platform in its own right  The Web is where most software is moving for cost, convenience, agility, and increased overall value 30

  31. Harnessing Collective Intelligence  The network effects of massive amounts of users make the collaborative Web a much more potent force than stand-alone software  Online collaborative entities such as Wikepedia are a network effect of the combined contributions of their users  Classic example of Web 2.0 31

  32. Data is the Next Intel Inside  The core functionality of many modern information systems is not software  It’s the valuable data within the system that is actually more important  Google’s search database  Amazon’s products and associated reviews  The data these sites posses are their real assets 32

  33. End of the Software Release Cycle  When software is on the Web, upgrading becomes a different experience  Upgrades and improvements to service are instantly available and encouraged to be as nondisruptive as possible 33

  34. Lightweight Programming Models  When the clients of Web software are numerous and diverse  Complex standards can get in the way  Web 2.0 leverages the easiest methods that work well  Lead to simpler services such as REST and RSS instead of SOAP and WS-* standards 34

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