Summary
In this presentation filmed during QCon London 2007, Martin Fowler and Dan North talk about the communication gap existing between the developers and the customers or users. Closing this gap is extremely important in order to create successful software.

Bio
Martin Fowler is one of our industry's most well known thought leaders having had an influence in the adoption of OO, refactoring, patterns, agile methodologies, domain modeling, UML, and XP. Dan North is a principal consultant with ThoughtWorks, where he writes software and coaches teams in agile and lean methods. He believes in putting people first and writing simple, pragmatic software.

About the conference
QCon is a conference that is organized by the community, for the community.The result is a high quality conference experience where a tremendous amount of attention and investment has gone into having the best content on the most important topics presented by the leaders in our community.QCon is designed with the technical depth and enterprise focus of interest to technical team leads, architects, and project managers.

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Summary
In this presentation filmed during QCon London 2007, Nat Pryce and Steve Freeman talk about TDD using Mock Objects. In their opinion, Mock Objects improves the software design and makes the code more easier to maintain and adapt to changing requirements.

Bio
Nat is an independent consultant with expertise in software design, software development process and practices, having worked in finance, telecommunications, sports reporting and online advertising. Steve was a pioneer of Agile software development in the UK, he has built applications for banks, ISPs, financial data providers, and specialist software companies.

About the conference
QCon is a conference that is organized by the community, for the community.The result is a high quality conference experience where a tremendous amount of attention and investment has gone into having the best content on the most important topics presented by the leaders in our community.QCon is designed with the technical depth and enterprise focus of interest to technical team leads, architects, and project managers.

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Summary
In this presentation made during QCon 2007, Dave Thomas talks about expanding people's expertise in their domains of interest by not treating them uniformly as they had the same amount of knowledge and level of experience.

Bio
Dave Thomas is a programmer, author, and publisher. With Andy Hunt he runs The Pragmatic Programmers, a consultancy which specializes in improving the lot of developers.

About the conference
QCon is a conference that is organized by the community, for the community.The result is a high quality conference experience where a tremendous amount of attention and investment has gone into having the best content on the most important topics presented by the leaders in our community.QCon is designed with the technical depth and enterprise focus of interest to technical team leads, architects, and project managers.

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Summary
Open Terracotta is an open-source, highly scalable, JVM-level clustering solution. As well as being a drop-in replacement for Tomcat Clustering, it can transparently cluster POJOs and Spring beans. This presentation will be an in-depth case study of a small mobile application built using Terracotta clustering.

Bio
Ari Zilka is CTO and co-founder of Terracotta. Previously, Ari was the Chief Architect at Walmart.com, where he led the innovation and development of the company's new engineering initiatives. Prior to Walmart.com, Ari worked as a consultant at Sapient and PriceWaterhouseCoopers.

About the conference
QCon is a conference that is organized by the community, for the community.The result is a high quality conference experience where a tremendous amount of attention and investment has gone into having the best content on the most important topics presented by the leaders in our community.QCon is designed with the technical depth and enterprise focus of interest to technical team leads, architects, and project managers.

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Summary
When we move to distributed architectures for scalability and/or fault-tolerance reasons we are also introducing additional complexities. Amazon CTO Werner Vogels dives into the different parameters that play in the tension between availability and consistency and presents a generalized model that we can use to reason about the trade-offs between different solutions.

Bio
Dr. Werner Vogels is VP & CTO at Amazon.com where he is responsible for driving the technology vision to continuously enhance the innovation on behalf of Amazon's customers at a global scale. Werner also blogs at All things Distribtued.

About the conference
QCon runs Nov 7-9 in San Francisco and also every March in London. QCon is InfoQ's conference, designed with the technical depth and enterprise focus of interest to technical team leads, architects, and project managers. QCon focuses on Architecture, Java, .NET, Ruby, SOA, and Agile.

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Summary
Although nearly everyone acknowledges the importance of user experience, usability often ends up pushed to the back of the queue. How then can we know whether what we are delivering makes sense and will work for our users? This presentation shows an approach to usability, focusing on activities in which users engage offers the potential for delivering dramatic improvements with much less effort.

Bio
Larry L. Constantine, IDSA, ACM Distinguished Engineer, is an award-winning designer specializing in visual and interaction design. As one of the pioneers of software engineering, he's contributed numerous concepts and techniques forming the foundations of modern practice in software. His publications in the computer sciences and human sciences include over 175 articles and papers plus 17 books.

About the conference
QCon is a conference that is organized by the community, for the community.The result is a high quality conference experience where a tremendous amount of attention and investment has gone into having the best content on the most important topics presented by the leaders in our community.QCon is designed with the technical depth and enterprise focus of interest to technical team leads, architects, and project managers.

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Summary
In this presentation @ QCon London, Zed Shaw explains the impact Mongrel's 2500 lines of code have had. He also goes into what makes a project successful (good documentation, make the product is to install and extend, etc) and how companies can get on the good side of open source projects they use.

Bio
Zed A. Shaw's Mongrel Web Server is the favored way for organizations of all kinds to breathe life into their fledgling Ruby on Rails applications. Zed has been developing software for close to 14 years professionally and has worked in such industries as academics, security, government, and companies big and small.

About the conference
QCon is a conference that is organized by the community, for the community.The result is a high quality conference experience where a tremendous amount of attention and investment has gone into having the best content on the most important topics presented by the leaders in our community.QCon is designed with the technical depth and enterprise focus of interest to technical team leads, architects, and project managers.

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Summary
A retrospective on Google's first Scrum implementation. Jeff Sutherland visited Google to do an analysis of the first Google implementation of Scrum on one of their largest distributed projects. Their strategy for inserting Scrum step by step into the Google engineering teams showed great insight and provides helpful lessons learned for all Agile teams.

Bio
Well known as the Co-Creator of the Scrum Agile Development Process which influenced the design of the other leading Agile process in the U.S., i.e. eXtreme Programming (XP). Scrum is a team organization process that brings focus, clarity, and enthusiasm to any project team in any domain.

About the conference
QCon is a conference that is organized by the community, for the community.The result is a high quality conference experience where a tremendous amount of attention and investment has gone into having the best content on the most important topics presented by the leaders in our community.QCon is designed with the technical depth and enterprise focus of interest to technical team leads, architects, and project managers.

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Summary
In this QCon presentation, Amazon.com CTO Werner Vogels explains how Amazon has become a platform provider, and how an increasing number of diverse businesses are built on the Amazon.com platform. Although Amazon.com's scale makes them seem an extreme case, lessons have been learnt that will be of use to every enterprise looking to provide services to or to consume services of business partners.

Bio
Werner Vogels is Vice President & Chief Technology Officer at Amazon.com. Prior to joining Amazon, he worked as a research scientist at Cornell University. He has held positions of VP of Technology and CTO in companies that handled the transition of academic technology into industry. Werner maintains a weblog at AllThingsDistributed.com.

About the conference
QCon is a conference that is organized by the community, for the community.The result is a high quality conference experience where a tremendous amount of attention and investment has gone into having the best content on the most important topics presented by the leaders in our community.QCon is designed with the technical depth and enterprise focus of interest to technical team leads, architects, and project managers.

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Summary
The goal of VSTS is to provide a tool that is not prescriptive and highly customizable for managing the software development process. Kevin Jones provides a soup to nuts framework for utilizing VSTS to support a development team and build better applications. He covers project management, source code control, class designers and various designers available to software architects.

Bio
Kevin has developed and delivered training in many areas including C++, MFX COM, Java,.NET. Member of the Servlets, and JavaServer Pages expert group, he has written articles on developing Web applications using Servlets and JSPs.He is the co-author of "Servlets and JavaServer Pages: The J2EE Technology Web Tier" and the co-author of both Developmentors Essential and Guerrilla Team System classes.

About the conference
QCon is a conference that is organized by the community, for the community.The result is a high quality conference experience where a tremendous amount of attention and investment has gone into having the best content on the most important topics presented by the leaders in our community.QCon is designed with the technical depth and enterprise focus of interest to technical team leads, architects, and project managers.

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Summary
In this talk, recorded at QCon London, Mark Nottingham explains how Yahoo! leverages Web technologies, specifically HTTP-based caching using Squid, to create a high-performance architecture for integrating multiple Yahoo! properties, concluding that the Web provides sophisticated techniques without using SOA tooling such as ESBs.

Bio
Mark Nottingham is a Principal Technical Yahoo!, putting together Web-based infrastructure for sites like Yahoo! Finance, Sports, Tech, TV and Movies. He has cp-authored specifications like the Atom Syndication Format, WS-Policy and the WS-I Basic Profile, and chaired both IETF and W3C Working Groups. Right now, his focus is on using HTTP for what the rest of the industry calls Web Services.

About the conference
QCon is a conference that is organized by the community, for the community.The result is a high quality conference experience where a tremendous amount of attention and investment has gone into having the best content on the most important topics presented by the leaders in our community.QCon is designed with the technical depth and enterprise focus of interest to technical team leads, architects, and project managers.

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Summary
This talk covers the key aspects of the Java Persistence API and its role in the development of EJB 3 app, including use of the EntityManager API, persistence units and persistence contexts, queries, object/relational mapping, and how the combination of EJB 3 and Java Persistence facilitates the development of Java EE applications.

Bio
Linda DeMichiel is a senior architect in the Java EE Platform group at Sun Microsystems and the chief architect for Enterprise JavaBeans 3.0 and the Java Persistence API. Linda is spec lead for JSR-220 and has been involved in designing the EJB spec since version 1.0.

About the conference
QCon is a conference that is organized by the community, for the community.The result is a high quality conference experience where a tremendous amount of attention and investment has gone into having the best content on the most important topics presented by the leaders in our community.QCon is designed with the technical depth and enterprise focus of interest to technical team leads, architects, and project managers.

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Summary
James Cox shows how to keep a Rails site up and running, while keeping performance high. The presentation dives deep into issues of keeping page performance up and avoiding bottlenecks. Next to tips on what to avoid (eg, hostname lookups) and what to do (eg. pre-caching), James also shows situations when to avoid ActiveRecord and fall back to SQL.

Bio
James Cox is the founder of smokeclouds, a UK based Ruby/Rails and scalability consultancy. He focuses on the architecture and usability of web applications. He has wide-ranging experience diving into legacy code, helping small sites bloom into big trees and generally trying to stay out of the way.

About the conference
QCon is a conference that is organized by the community, for the community.The result is a high quality conference experience where a tremendous amount of attention and investment has gone into having the best content on the most important topics presented by the leaders in our community.QCon is designed with the technical depth and enterprise focus of interest to technical team leads, architects, and project managers.

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Summary
In one of the most entertaining presentations on the topic ever, Dr. Jim Webber debunks myths about the mainstream ESB concept and explains how a lightweight approach can yield real benefits without giving in to vendor pressure. Jim claims that an ESB often ends up being just a thin veneer on an existing mess, and how an approach that doesn't put intelligence into the network is superior.

Bio
Dr. Jim Webber is the SOA Practice lead for ThoughtWorks, where he works on Web Services-based systems for clients worldwide. He has extensive Web Services architecture and development experience and was the lead developer with Hewlett-Packard on the industry's first Web Services Transaction solution. Jim is co-author of the book "Developing Enterprise Web Services - An Architect's Guide."

About the conference
QCon is a conference that is organized by the community, for the community.The result is a high quality conference experience where a tremendous amount of attention and investment has gone into having the best content on the most important topics presented by the leaders in our community.QCon is designed with the technical depth and enterprise focus of interest to technical team leads, architects, and project managers.

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Summary
Communication is everywhere. The Windows Communication Foundation (WCF) can be used to design and develop service-oriented distributed solutions. This presentation shows the basics of WCF and how to solve common problems in distributed systems. Christian Weyer provides a practical approach to realizing distributed solutions with WCF - beyond the hype and 'Hello World'.

Bio
Christian Weyer is co-founder of thinktecture, supporting software architects and developers in designing and implementing distributed solutions architectures. He has been modeling and implementing distributed applications. Christian has been focusing on the ideas and concepts of service-orientation and their practical translation. He is Microsoft MVP and Microsoft Regional Director.

About the conference
QCon is a conference that is organized by the community, for the community.The result is a high quality conference experience where a tremendous amount of attention and investment has gone into having the best content on the most important topics presented by the leaders in our community.QCon is designed with the technical depth and enterprise focus of interest to technical team leads, architects, and project managers.

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Summary
In this presentation, recorded at QCon, Burton Group research director Anne Thomas Manes talks about how to make the business case for SOA. Her talk covers explaining SOA to non-technical business people, various approaches for selling SOA to management and gaining funding for SOA investments.

Bio
Anne Thomas Manes is a Vice President and Research Director at Burton Group. Anne has participated in standards development at W3C, OASIS, JCP, UDDI.org, and WS-I. She is a member of the editorial board of Web Services Journal, a leading industry publication, is a frequent speaker at trade shows, author of numerous articles and a book on web services.

About the conference
QCon is a conference that is organized by the community, for the community.The result is a high quality conference experience where a tremendous amount of attention and investment has gone into having the best content on the most important topics presented by the leaders in our community.QCon is designed with the technical depth and enterprise focus of interest to technical team leads, architects, and project managers.

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Summary
In this presentation from QCon, Erik Meijer discuss C# 3.0 and LINQ with Objects, XML, and relational data using O/R mapping with a focus on composition. This is a more in depth discussion building on top of his "Democratizing the Cloud" presentation.

Bio
Erik Meijer is an architect in the Microsoft SQL server division where he currently works together with the Microsoft Visual C# and the Microsoft Visual Basic language design teams on data integration in programming languages. He was an associate professor at Utrecht University and adjunct professor at the Oregon Graduate Institute.Erik is one of the designers of Haskell98 and the Cw language.

About the conference
QCon is a conference that is organized by the community, for the community.The result is a high quality conference experience where a tremendous amount of attention and investment has gone into having the best content on the most important topics presented by the leaders in our community.QCon is designed with the technical depth and enterprise focus of interest to technical team leads, architects, and project managers.

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Summary
Rich Kilmer explains Domain Specific Languages and how they help working with domain experts. The presentation includes an overview of styles of external and internal DSLs in Ruby and explains implicit and explicit styles, complete with advantages and trade-offs of either approach. The presentation is rounded off with a look at imperative and declarative styles of DSLs.

Bio
Rich Kilmer is the founder of Virginia-based software company InfoEther, Inc where he is leading the development of a desktop-based Ruby + Flash consumer application. His technical background includes peer-to-peer software, wireless web, workflow, and pen computing.

About the conference
QCon is a conference that is organized by the community, for the community.The result is a high quality conference experience where a tremendous amount of attention and investment has gone into having the best content on the most important topics presented by the leaders in our community. QCon is designed with the technical depth and enterprise focus of interest to technical team leads, architects, and project managers.

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Summary
An Ajax application can go for several hours without leaving the original page. In this talk, Dave Crane explores ways to apply design patterns to the client tier, and how the use of patterns compares with the server-side. He examines the tension between maintaining server-control and delegating control to the client, and looks at the pros and cons of each architecture with real-world examples.

Bio
Dave Crane is a well known authority in the field of Ajax and web application development, as a writer, trainer and software developer. He has worked with a number of web technologies from Perl through to Java over the last ten years. He is currently a senior developer for UK-based Historic Futures Ltd., developing the next generation of socially responsible supply-chain systems using Ajax.

About the conference
QCon is a conference that is organized by the community, for the community.The result is a high quality conference experience where a tremendous amount of attention and investment has gone into having the best content on the most important topics presented by the leaders in our community.QCon is designed with the technical depth and enterprise focus of interest to technical team leads, architects, and project managers.

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Summary
In this presentation filmed during QCon London 2007, Boris Gloger speaks about retrospectives. Agile development teams learn and improve by inspecting and adapting. High performing teams inspect and adapt not only their code and tests, but also their methods and interactions.

Bio
Boris is a Certified Scrum Master Trainer and NLP Practitioner and holds a Master in Philosophy and Sociology from TU Darmstadt, Germany. He founded SPRiNT iT, an agile software development and consulting company in Ettlingen, Germany.

About the conference
QCon is a conference that is organized by the community, for the community.The result is a high quality conference experience where a tremendous amount of attention and investment has gone into having the best content on the most important topics presented by the leaders in our community.QCon is designed with the technical depth and enterprise focus of interest to technical team leads, architects, and project managers.

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Summary
In this presentation, recorded at QCon London, Cap Gemini's Steve Jones explains his concept of a business service architecture. Topics covered include how to apply SOA to existing systems, the problems one runs into when SOA is driven by technology, and the structural and organizational impact of business-driven SOA.

Bio
Steve Jones is head of SOA for Global Outsourcing at Cap Gemini. He authored the InfoQ book "Enterprise SOA Adoption Strategies" and is a frequent speaker at conferences, focusing on the business side of SOA. Steve is a member of several standards bodies including the OASIS SOA Reference Model group, Java Business Integration and the original JAX-RPC group.

About the conference
QCon is a conference that is organized by the community, for the community.The result is a high quality conference experience where a tremendous amount of attention and investment has gone into having the best content on the most important topics presented by the leaders in our community.QCon is designed with the technical depth and enterprise focus of interest to technical team leads, architects, and project managers.

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Summary
Security is all about trade-offs you make with your always limited resources, often a problem when designing a system or an after-thought. Only a few have the expertise to design good security and most development teams have no security expert. This talk focuses on Security Patterns for designing security in architectures, such as Role-based Access Control, Single Access Point, and Front Door.

Bio
Peter Sommerlad is professor for software engineering and head of Institute for Software at HSR Hochschule für Technik, Rapperswil. Peter is co-author of the books Pattern-oriented Software Architecture Vol.1 and Security Patterns. His research interests are refactoring for non-Java languages and a goal of making software simpler by decremental development: Refactoring software to 10% its size.

About the conference
QCon is a conference that is organized by the community, for the community.The result is a high quality conference experience where a tremendous amount of attention and investment has gone into having the best content on the most important topics presented by the leaders in our community.QCon is designed with the technical depth and enterprise focus of interest to technical team leads, architects, and project managers.

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Summary
In this presentation from QCon London, William Soo and Meeraj Kunnumpurath discuss the Voca transaction processing system architecture, the previous Mainframe-based architecture, architectural challenges and requirements, the new Spring and J2EE-based architecture, upcoming challenges for Voca, and technologies to watch for in the future.

Bio
William Soo is Head of Architecture and CTO at Voca. William is responsible for driving the technology vision, architecture, design and development of new generation of payments services for banks and corporates. Meeraj Kunnumpurath works as the Lead Technologist for VocaLink. He has published many books and articles on enterprise Java, web services and SOA.

About the conference
QCon is a conference that is organized by the community, for the community.The result is a high quality conference experience where a tremendous amount of attention and investment has gone into having the best content on the most important topics presented by the leaders in our community.QCon is designed with the technical depth and enterprise focus of interest to technical team leads, architects, and project managers.

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Summary
In this presentation filmed during QCon London 2007, Joseph Pelrine talks about the challenges faced by organizations trying to adopt Agile methods. There are times when organizations fail to become agile, and Joseph offers some reasons why that happens. An important factor in Agile adoption is understanding and mitigating conflicts.

Bio
Joseph Pelrine is C*O of MetaProg, a company devoted to increasing the quality of software and its development process, and is Europe's first senior certified ScrumMaster Practitioner and Trainer as well as one of Europe's leading experts on eXtreme Programming. He has had a successful career as software developer, project manager and consultant.

About the conference
QCon is a conference that is organized by the community, for the community.The result is a high quality conference experience where a tremendous amount of attention and investment has gone into having the best content on the most important topics presented by the leaders in our community.QCon is designed with the technical depth and enterprise focus of interest to technical team leads, architects, and project managers.

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Summary
Architecture is perceived as a heavy-weight activity which does not fit into an Agile process, so many teams start without it, just to find themselves re-doing the software later because the code structure was not good enough to support maintainability and evolution. In this presentation, Coplien and Henney describe how to start with enough architecture to ensure long term success of the project.

Bio
Coplien is a Senior Agile Coach, and Systems Architect working at Gertrud&Cope. He is a well-known industry speaker, author, and innovator. Henney is an independent consultant and trainer based in Bristol, UK. He has developed and delivered training courses, consultancy and software across a number of domains.

About the conference
QCon is a conference that is organized by the community, for the community.The result is a high quality conference experience where a tremendous amount of attention and investment has gone into having the best content on the most important topics presented by the leaders in our community.QCon is designed with the technical depth and enterprise focus of interest to technical team leads, architects, and project managers.

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Summary
InfoQ.com is a web app/portal implemented with the latest in portal technology and web development. This session shows the good, the bad, and the ugly of building InfoQ.com; from (lack of) initial requirements, design/implementation choices, deployment issues, and lessons learned along the way. The talk examines features of the site and their implementation in the web layer, domain model, and DB.

Bio
Floyd Marinescu is co-founder of InfoQ.com and the QCon conference, and was also the creator of TheServerSide.com. Floyd is the author of the best seller "EJB Design Patterns". Alexandru Popescu is Chief Architect and co-founder of InfoQ.com. He is co-founder of the TestNG Framework and a committer on the WebWork and Magnolia projects.

About the conference
QCon is a conference that is organized by the community, for the community.The result is a high quality conference experience where a tremendous amount of attention and investment has gone into having the best content on the most important topics presented by the leaders in our community.QCon is designed with the technical depth and enterprise focus of interest to technical team leads, architects, and project managers.

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Summary
In this presentation recorded during QCon London 2007, Rachel Davies, director of Agile Alliance, talks about the Agile development cycle starting with user stories and planning the releases. This presentation is less about "why" one should use Agile over other development process, and more about the practical "how" one should proceed about being agile.

Bio
Rachel Davies coaches teams in Agile software development techniques, such as TDD and planning with user stories. She is passionate about Agile software development because it increases the chance of success projects in the face of complex problems. Rachel is internationally recognized in her field, as both a frequent presenter at industry conferences and Chair of the Agile Alliance.

About the conference
QCon is a conference that is organized by the community, for the community.The result is a high quality conference experience where a tremendous amount of attention and investment has gone into having the best content on the most important topics presented by the leaders in our community.QCon is designed with the technical depth and enterprise focus of interest to technical team leads, architects, and project managers.

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Summary
In this presentation, recorded at QCon London, Paul Downey, who is Chief Web Services Architect for BT and a participant in many standards groups, talks about the Web and why he believes its architecture is superior to that of SOAP/WSDL-based Web services.

Bio
Paul acts as Chief Web Services Architect for BT, defined the exposure of the BT Web21C services, chairs the W3C XML Schema Patterns for Databinding Working Group has participated in the W3C Web Services Addressing, W3C Web Services Description and WS-I Basic Profile Working Groups, and presented at the W3C Workshop on The Web of Services for Enterprise Computing.

About the conference
QCon is a conference that is organized by the community, for the community.The result is a high quality conference experience where a tremendous amount of attention and investment has gone into having the best content on the most important topics presented by the leaders in our community.QCon is designed with the technical depth and enterprise focus of interest to technical team leads, architects, and project managers.

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Summary
Writing a test makes you clarify your ideas about what needs to be done, and making the test pass means that you know that you've added a little more functionality today. Having a comprehensive suite of tests gives you the confidence to get on with things because you can tell when you've broken the system, and tests that are difficult to write show you where you need to improve.

Bio
Steve was a pioneer of Agile software development in the UK, he has given training courses in Europe, America, and Asia. Previously, he worked in research labs, software houses, earned a PhD, and wrote shrink-wrap software for IBM. Steve also teaches in the Computer Science department at University College London.

About the conference
QCon is a conference that is organized by the community, for the community.The result is a high quality conference experience where a tremendous amount of attention and investment has gone into having the best content on the most important topics presented by the leaders in our community.QCon is designed with the technical depth and enterprise focus of interest to technical team leads, architects, and project managers.

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