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SOAP vs REST
 

SOAP vs REST

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(Check my blog @ http://www.marioalmeida.eu/ )

(Check my blog @ http://www.marioalmeida.eu/ )
Comparison between SOAP and REST.

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  • Thank you for posting this, however the title should be 'Why REST is better than SOAP' since the bias becomes quickly obvious.
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    SOAP vs REST SOAP vs REST Presentation Transcript

    • SOAP vs RESTPresentation by Mario Almeida
    • Index● What is a webservice?● Services interoperability● What is SOAP?● What is REST?● Peek at competition● Characteristics ○ Popularity ○ Simplicity ○ Bandwidth ○ Security ○ Caching ○ State● Problems● Conclusion
    • What is a Webservice?"Software system designed to supportinteroperable machine-to-machine interactionover a network" - W3C
    • Services interoperability!Systems interact with the web service usingmessages sent through HTTP generally with anXML serialization.
    • What is SOAP?Simple Object Access Protocol
    • What is REST?Representational State Transfer
    • Lets take a peek on the competition!● Yahoo and all its services such as Flickr and deli.ici.ous use REST● Amazon and Ebay provide both though Amazons internal usage is nearly all REST.● Google used to provide SOAP for all their services, but in 2006 they deprecated in favor of REST.
    • Characteristics: SimplicityREST:● Is easy to build - no toolkits required!● Just figure how to create and modify the URI to access different web resources!SOAP:● Requires a toolkit to form requests and parse results!● Requires specific knowledge of a new XML specification.
    • Characteristics: Bandwidth!REST:● can be short!SOAP:● requires an XML wrapper around every request and response● once namespaces and typing are declared can take 10 times as many bytes as the same message in REST.
    • Characteristics: Security!REST:● easy to analyze the intent of each message by checking the HTTP command!● Certificates and LDAP can delegate authentication and authorization to the network layer.● Secure data should never be sent as parameters in the URI.SOAP:● Needs to look into SOAP envelope!● Authentication and authorization in the application layer.
    • Characteristics: Caching!Caching?● take advantage of all the caching infrastructure that is built into the Web infrastructure.
    • Characteristics: State!Session State is Evil! (SOAP)● Enormous impact on scalability and avalability.
    • Other problems?● Banking transactions? ○ ACID properties! ○ Reliable messaging! ○ Enterprise security features!● Language support? (SOAP) ○ Good: .NET, Java (Axis) ○ Ok: C++ (gSOAP), PERL (SOAP::Lite) ○ Poor: Phyton (SOAPpy, ZSI, PHP● File transfers?
    • Conclusion: What purpose?How important are the ACID properties?What security measures?Scalability? Availability?
    • Conclusion: How fast?What is the Learning curve?How is the Testing?How is the Error Handling?
    • Future?● SOAP has been evolving in a way that it is more similar to REST by allowing other HTTP commands.● Hypermedia as the engine of application state.● Uniform interfaces● Stateless communications between servers and clients.
    • References● http://geeknizer.com/rest-vs-soap-using-http-choosing-the-right- webservice-protocol/● http://davidvancouvering.blogspot.com/2007/09/session-state-is-evil.html● http://www.javaworld.com/javaworld/jw-03-2002/jw-0308-soap.html - caching SOAP services on client side● http://roy.gbiv.com/untangled/2008/rest-apis-must-be-hypertext-driven● http://tomayko.com/writings/rest-to-my-wife● http://www.25hoursaday. com/weblog/2005/03/17/ETech2005TripReportBuildingANewWebServiceA tGoogle.aspx
    • ImagesAll of the following images have creative common rights:● http://www.flickr.com/photos/ahmadnawawi/3808452611 - stock market● www.flickr.com/photos/soldiersmediacenter/4723608143 - handshake● http://www.flickr.com/photos/oceanflynn/6638184545 - networks● http://www.flickr.com/photos/mybloodyself/5659661793 - clock● http://www.flickr.com/photos/tim_norris/2789759648 - snail● http://www.flickr.com/photos/garrette/53235940/ - pc● http://www.flickr.com/photos/legofenris/5410534167 - darth vader