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The Enterprise Architecture you always wanted has been hiding in plain sight since 1991. Jim Webber http:// jim.webber.name Twitter: @ jimwebber. Or: A Billion Transactions Per Month Using the Web for Enterprise Heavy Lifting. Jim Webber http:// jim.webber.name Twitter: @ jimwebber.
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The Enterprise Architecture you always wanted has been hiding in plain sight since 1991 Jim Webber http://jim.webber.name Twitter: @jimwebber
Or: A Billion Transactions Per MonthUsing the Web for Enterprise Heavy Lifting Jim Webber http://jim.webber.name Twitter: @jimwebber
“SOA: Principles of Service Design underwent a thorough technical review involving over 60 reviewers from different vendors, organizations, and professions across North America, Europe, and Asia. The book has been formally endorsed by members of major SOA vendors, including IBM, Microsoft, Oracle, BEA, and Intel.” -- Thomas Erl
ESB - Erroneous Spaghetti Box? Enterprise Service Bus
Why? Because it’s “less risky”
Why? Because that’s what the market does
Why? Because we need the -ilities
End to End Secure Messaging End to End Secure Conversations
Security Tokens and claims Federating access with tokens
…you wouldn’t use it at home!
Bottleneck Problem solved! Crash recovery? Denial of Service No trust
<?xml version="1.0" encoding="UTF-8"?> <definitions name="HelloService" targetNamespace="http://www.ecerami.com/wsdl/HelloService.wsdl" xmlns="http://schemas.xmlsoap.org/wsdl/" xmlns:soap="http://schemas.xmlsoap.org/wsdl/soap/" xmlns:tns="http://www.ecerami.com/wsdl/HelloService.wsdl" xmlns:xsd="http://www.w3.org/2001/XMLSchema"> <message name="SayHelloRequest"> <part name="firstName" type="xsd:string"/> </message> <message name="SayHelloResponse"> <part name="greeting" type="xsd:string"/> </message> <portType name="Hello_PortType"> <operation name="sayHello"> <input message="tns:SayHelloRequest"/> <output message="tns:SayHelloResponse"/> </operation> </portType> <binding name="Hello_Binding" type="tns:Hello_PortType"> <soap:binding style="rpc" transport="http://schemas.xmlsoap.org/soap/http"/> <operation name="sayHello"> <soap:operationsoapAction="sayHello"/> <input> <soap:body encodingStyle="http://schemas.xmlsoap.org/soap/encoding/" namespace="urn:examples:helloservice" use="encoded"/> </input> <output> <soap:body encodingStyle="http://schemas.xmlsoap.org/soap/encoding/" namespace="urn:examples:helloservice" use="encoded"/> </output> </operation> </binding> <service name="Hello_Service"> <documentation>WSDL File for HelloService</documentation> <port binding="tns:Hello_Binding" name="Hello_Port"> <soap:address location="http://localhost:8080/soap/servlet/rpcrouter"/> </port> </service> </definitions> Hello World!
The Web is a coordination platform Microformats Verbs hypermedia Status codes Media Types Semantics
Pie in the sky? Not at all
A Case Study Client • UK-based telecoms service provider • Global customers (no easy downtime) Problem • Scalability and system resilience issues • Huge growth curve to from a million to a billion messages per month • Costs
Platform Architecture Where’s my file gone? Bottleneck Carrier Nightmare! Carrier Carrier Gateway Integration Database Shared Filesystem Carrier Post Processing Voice to Text Algorithms Fix things up here Shoehorn it in that other program
The £10 Million Solution * Gateway “Queue” Database Shared Filesystem Carrier Carrier Carrier Carrier Enterprise Service Bus Post Processing Voice to Text Algorithms * Solution does not include actual implementation
…and told to “do that, but cheaper” ThoughtWorks was given the output from a previous enterprise consultancy…
Thinkdifferently! (or even just stop and think)
Agile EA: Prioritise Service Delivery Start by fixing storage Carrier Carrier Carrier Gateway Integration Database Shared Filesystem Carrier Post Processing Voice to Text Algorithms
This is how risk is mitigated. Not by buying middleware up-front!
Storage Manager Project Delivery Small team 3 Week Inception 14 iterations Java solution Performance testing throughout • See Jones and Kua paper, Agile 2009 Continuously built and deployed for testing
Web-friendly Architecture(mostly wallet-friendly too!) Encapsulates storage detail! Jboss/Tomcat Fast! Free! Cacheable! Storage Manager Optimised disk access! GPFS SAN Optimised server config Spend £ on the right Infrastructure