InfoQ Homepage Patterns Content on InfoQ
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Article: Software Development Lessons Learned from Poker
There is no silver bullet. We know it, but don't act like it. Your language, tool or process is better, right? In this article, Jay Fields says: "It depends". The right choices varies with context, people, and more. This article touches upon how a lot of things must impact a choice; learning culture, skill levels, teamwork, incomplete information, metrics - and context.
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Interview: Michael Stal on Architecture Refactoring
In this interview, Michael Stal describes what architecture refactoring is about and how it relates to both code refactoring and patterns. He describes some architectural refactorings by giving real work examples from his work as Siemens, and he elaborates on some situations where you may want to avoid doing this kind of refactorings.
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Article: An Approach to Internal Domain-Specific Languages in Java
In this article, Alex Ruiz and Jeff Bay describe Java's suitability as a DSL-producing language, delve into the creation of internal DSLs in Java, walk through an example of a Java-based internal DSL, and give recommendations on writing DSLs in Java.
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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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Book Review: Implementation Patterns
Kent Beck's new book, Implementation Patterns, is a book about writing code in Java. The patterns in this book are based on Kent's reading of existing code as well as his own programming habits. The patterns in this book are meant to be a coherent view of how to write code people can understand.
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Pattern Oriented Software Architecture Volumes 4 and 5 released
Volume 4 and 5 in the Pattern-Oriented Software Architecture book series has been released. Volume 4 is about a pattern language for distributed computing and volume 5 is an in-depth look of what patterns are, what they are not, and how to use them successfully. InfoQ spoke to the authors to find out more.
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IBM Updates Architect Content/Info Kit
IBM in May updated their "Software Architect Kit", a bundle of content for architects including podcasts by Grady Booch on trends, patterns and best practices in architecture, webcasts, demos, and whitepapers on patterns-based development, SOA, model-driven architecture, and software structure & modularity. The kit requires registration before all the content can be downloaded.
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Article: Service Firewall Pattern
InfoQ publishes a sample pattern from Arnon Rotem-Gal-Oz' in-progress book SOA Patterns. Arnon explains how to use a Service Firewall to intercept messages to provide better security.
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Entity Services - Pattern or Anti-pattern?
Entity Services or business-centric entities are considered by some to be a corner stone of Service Oriented Architecture - however not everyone agrees with this view. So are Entity Services a pattern or an anti-pattern for SOA?
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Presentation: Event Patterns
Ian Cartwright presents some of his work (developed with Martin Fowler) on Event Patterns (recorded at JAOO), including: Event Sourcing, Event Collaboration, Parallel Model, and Retroactive Event. These patterns can be used in scenarios where a sequence of domain model changes may need to be recorded, reversed, corrected, or simply observed.
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Five Common Ajax Anti-Patterns
Jack Herrington has written about common pitfalls in Ajax code, calling out five specific problems he sees often enough to consider anti-patterns: Polling on a timer when you don't need to, not inspecting the return results in the callback, passing complex XML when HTML would be better, and more.
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Presentation: SOA Masterclass - SOA Definitions and Patterns
Miko Matsumura teaches SOA Foundations: Definitions, Patterns, and evolution toward SOA. The video is an excerpt from webMethods SOA Masterclass taught recently in San Francisco. Miko teaches consumer, producer, and governance patterns.
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InfoQ Article: 10 Principles of SOA
In this article, InfoQ's Stefan Tilkov, consultant at innoQ, proposes 10 principles to serve as a basis for SOA discussions. The list starts with Don Box's four tenets (service with explicit boundaries, shared contract and schema, policy-driven, and autonomous) and expands them to include wire formats, document orientation, loose coupling, standards compliance, vendor independence, and metadata
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Presentation: Bob Martin's Principles of Agile Design
Bob Martin of Object Mentor presents the first of his five principles of agile design. Beginning with an explanation of the real purpose of object-oriented design - the management of dependencies - Bob walks through a code example to illustrate how dependencies can be managed with abstractions, and that good designs are those in which high-level abstractions do not depend on low-level details.
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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.