Software Engineering Radio - the podcast for professional software developers

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SE Radio 226: Eric Evans on Domain-Driven Design at 10 Years May 13, 2015

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Eberhard Wolff talks with Eric Evans, the founder of domain-driven design (DDD), about its impact after 10 years. DDD consists of domain-modelling patterns; it has established itself as a sound approach for designing systems with complex requirements. The show covers an introduction to DDD, how the community's understanding of DDD has changed in the last 10 years, the often overlooked component—strategic design, how to use DDD to design microservices, and the connection between microservices and the DDD bounded context. DDD originated during the era of object orientation and relational databases; the show concludes with a look at the recent impact of functional programming and NoSQL on DDD.

SE Radio 225: Brendan Gregg on Systems Performance Apr 14, 2015

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Senior performance architect and author of *Systems Performance* Brendan Gregg talks with Robert Blumen about systems performance: how the hardware and OS layers affect application behavior. The discussion covers the scope of systems performance, systems performance in the software life cycle, the role of performance analysis in architecture, methodologies for solving performance problems, dynamic tracing and tracing tools such as DTrace, the disk and file subsystems, the CPU and memory subsystems, and the challenges virtualization poses for performance analysts.

SE Radio 224: Sven Johann and Eberhard Wolff on Technical Debt Mar 31, 2015

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In this episode, Sven Johann and Eberhard Wolff talk about technical debt and how to handle it. They begin by defining external and internal quality and then talk about technical debt as a metaphor for discussing quality with management. They then consider whether technical debt is bad and how to handle it by using Eric Evan's strategic design. The show explores the reasons for technical debt; Martin Fowler's quadrant model is good for categorizing the root causes. Approaches to handling technical debt include the radical question of whether technical debt should be repaid at all. After all, debt-free systems actually might not exist, which leads to the question of whether technical debt is a good metaphor. Quality investments based on the SQALE (Software Quality Assessment based on Lifecycle Expectations) provide a different metaphor and another way to handle technical debt.

SE Radio 223: Joram Barrez on the Activiti Business Process Management Platform Mar 18, 2015

Show notes

Josh Long talks to Activiti cofounder Joram Barrez about the wide world of (open source) workflow engines, the Activiti BPMN2 engine, and what workflow implies when you're building process-driven applications and services. Joram was originally a contributor to the jBPM project with jBPM founder Tom Baeyens at Red Hat. He cofounded Activiti in 2010 at […]

SE Radio 222: Nathan Marz on Real-Time Processing with Apache Storm Mar 06, 2015

Show notes

Nathan Marz is the creator of Apache Storm, a real-time streaming application. Storm does for stream processing what Hadoop does for batch processing. The project began when Nathan was working on aggregating Twitter data using a queue-and-worker system he had designed. Many companies use Storm, including Spotify, Yelp, WebMD, and many others. Jeff and Nathan […]

SE Radio 221: Jez Humble on Continuous Delivery Feb 24, 2015

Show notes

Johannes Thönes interviews Jez Humble, senior vice president at Chef, about continuous delivery (CD). They discuss continuous delivery and how it was done at Go, CD, and HP firmware; the benefits of continuous delivery for developers; Conway's law and cross-functional teams; scary releases and nonscary releases; fix-forward, blue-green deployments, and A/B testing; origins of continuous […]

SE Radio 220: Jon Gifford on Logging and Logging Infrastructure Feb 18, 2015

Show notes

Robert Blumen talks to Jon Gifford of Loggly about logging and logging infrastructure. Topics include logging defined, purposes of logging, uses of logging in understanding the run-time behavior of programs, who produces logs, who consumes logs and for what reasons, software as the consumer of logs, log formats (structured versus free form), log meta-data, logging […]

SE Radio 219: Apache Kafka with Jun Rao Feb 09, 2015

Show notes

Jeff Meyerson talks to Jun Rao, a software engineer and researcher (formerly of LinkedIn). Jun has spent much of his time researching MapReduce, scalable databases, query processing, and other facets of the data warehouse. For the past three years, he has been a committer to the Apache Kafka project. Jeff and Jun first compare streaming […]

SE Radio 218: Udi Dahan on CQRS (Command Query Responsibility Segregation) Jan 30, 2015

Show notes

Guest Udi Dahan talks with host Robert Blumen about the CQRS (command query responsibility segregation) architectural pattern. The discussion begins with a review of the command pattern. Then a high-level overview of CQRS, which consists of a separation of a command processing subsystem that updates a write model from one or more distinct and separate, […]

SE Radio 217: James Turnbull on Docker Jan 07, 2015

Show notes

James Turnbull joins Charles Anderson to discuss Docker, an open source platform for distributed applications for developers and system administrators. Topics include Linux containers and the functions they provide, container images and how they are built, use cases for containers, and the future of containers versus virtual machines. Venue: Internet Related Links James's home page: […]

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