InfoQ Homepage XP Content on InfoQ
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Interview with Joseph Pelrine: Agile Works. But HOW?
Joseph Pelrine has come full circle: from university studies in Psychology, journeying through SmallTalk, XP and Scrum, and now back to broader questions: Why and how does Agile work? In this interview, Joseph talked about Complexity Science, and how story-telling, "sense-making," network analysis and speed-dating's gut-feel approach may prove more useful than our old toolkits for managing teams.
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TDD: Essential Skill or Architectural Landmine?
At JAOO '07 Bob Martin asserted: "it is irresponsible for a developer to ship a line of code he has not executed in a unit test." In this InfoQ video, Martin debated with another well respected software thought leader, Jim Coplien, on this and other topics, including Design by Contract vs. TDD and how much up-front architecture is needed to keep a system consistent with the business domain model.
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Continuous Integration And Version Control for Databases
After asserting that one must, as a rule, always version their database work, Scott Allen detailed an approach to making the best of versioning databases. Allen presented a comprehensive, practical approach to creating a baseline, using change scripts to manage schematic revisions, controlling programmatic database objects, and handling branching and merging.
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TDD/BDD Leading To Incomplete Unit Tests?
Peter Ritchie raised concern about TDD and BDD keeping practitioners from writing good unit tests. He cites an over-reliance on “interaction testing", a core mantra and essence of TDD and BDD, as a driver with tendency to result in incomplete unit testing.
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Kent Beck on Implementation Patterns
What does good code look like? In this interview, Kent Beck talks about his new book, Implementation Patterns, that deals with this question. Kent explains why Compose Method is so important, but also talks about the relationship between implementation patterns and XP, the history of software patterns and why he believes that Cockburn's Shu-Ha-Ri description of learning is naïve and simplistic.
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Is Velocity Really the Golden Measurement?
What value do teams get from measuring velocity, beyond the ability to reasonably estimate commitments for the short-term future? J.B. Rainsberger proposes that teams spend less energy scrutinizing velocity and more energy thoughtfully identifying and eliminating areas of waste in their projects.
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Religion driven industry? Buzzwords and checklists vs. thinking and inspection
James O. Coplien has recently argued that today’s industry is based on buzzwords and checklists. The use of some techniques and methodologies, TDD for instance, has become “a religious issue”. This prevents from inspecting possible tradeoffs and focusing on finding solutions that would be the most appropriate and the most cost-effective for a given project.
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InfoQ Interview: Experiences with Planning Poker
In this fourteen-minute interview, Nils Haugen described "Planning Poker," a simple mechanism for arriving at estimates collaboratively, which has additional team building benefits and improves team estimates over time. Haugen shared his views on why this technique is an important tool for Agile teams in this InfoQ interview.
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Agile Measurement - A Missing Practice?
Tom Gilb and Lindsey Brodie have written an article that suggests that Agile methods have a major weakness - that of lack of quantification. They argue that all qualities can be expressed quantitatively and present a new process, PLanguage, which looks very much like Scrum with an explicit measurement step. Are they right? Are Agile methods such as Scrum and XP in need of explicit measurement?
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InfoQ Book: Scrum and XP from the Trenches
Henrik Kniberg last year published wildly popular paper 'Scrum and XP from the trenches' in which he chronicled in pictures and text how his 40 person development team implemented parts of Scrum/XP over a one year period. Henrik has updated his work and published a new version of it as a full book with InfoQ.com.
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Interview: Kent Beck on Agile Adoption & Values
In a new interview, InfoQ editor Kurt Christensen asks Kent Beck - creator of JUnit and Extreme Programming - some questions about the adoption of agile values and practices.
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Case Study: Developing a Custom Agile Practice Adoption Strategy
Teams can get sidetracked by process when implementing Agile: they spin, trying to figure out which practices to start with, unsure which will have the biggest impact, or how they fit together. In their InfoQ case study, Amr Elssamadisy and John Mufarrige develop a customized adoption approach to help a team decide where to focus first - an alternative to adoption of pre-packaged methodologies.
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AgileTrack: New Agile Project Tracking Toolset Released
After a year of beta testing, AgileTrack Software released AgileTrack 1.0.0 last week, a software development and project management tool that allows programmers to apply agile development techniques in their projects. Interesting features include: web services for 3rd party integration and collaboration facilities built into client for sharing team knowledge.
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Scrum and XP from the Trenches - 90 page experience report
In his recently published "Scrum and XP From the Trenches," Henrik Kniberg gives a comprehensive description of how he implemented a mix of Scrum and XP practices for a development team of 40 people.
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Sharing What's Worked: Patterns for Adopting Agile Practices
Organizations adopting Agile naturally ask these questions; "Where do I start?", "What specific practices should I adopt?", "How can I adopt incrementally?" and "Where can I expect pitfalls?" In this article, Amr Elssamadisy gives a glimpse into an ongoing effort to document Agile practice adoption patterns: Participants at XPday Montreal took a stab at "Simple Design" and "Pair Programming."