Tag: patterns
Episode 215: Gang of Four – 20 Years Later
Johannes Thönes talks with Erich Gamma, Ralph Johnson and Richard Helm from the Gang of Four about the 20th anniversary of their book Design Patterns. They discuss the following topics: the definition of a design pattern and each guest’s favorite design pattern; the origins of the book in architecture workshops; the writing of the book […]
Episode 191: Massively Open Online Courses
Recording Venue: Skype Guest: Douglas C. Schmidt In this episode we talk with Douglas C. Schmidt, who is a professor of computer science at Vanderbilt University and a well-respected authority in the fields of patterns and frameworks for concurrent and networked software. In this interview we talk about these topics in the context of massive […]
Episode 81: Interview Erich Gamma
This episode is a conversation with Erich Gamma. We covered the four things he is known for in chronological order. We started with design patterns and the Gang-of-Four book of which he is the lead author. We then looked at JUnit, the testing framework he coauthored with Kent Beck and how it introduced unit testing to the masses. The next topic is obviously Eclipse, where Erich and his lab in Zürich is responsible for the Java Development Tooling. We also briefly discussed The Eclipse Way, the (obviously) successful process the Eclipse team uses for developing Eclipse itself. Finally, we’re looking at Erich’s current endeavour, the Jazz project. Jazz is a technology for collaborative software development.
Episode 79: Small Memory Software with Weir and Noble
In this Episode we’re discussing patterns for small memory software with the authors of the like-named book Charles Weir and James Noble. We look at various aspects of the small memory problem: How can you manage memory use across a whole system? What can you do when you have run out of primary storage? How can you fit a quart of data into a pint pot of memory? How can you reduce the memory needed for your data? How do you allocate memory to store your data structures? Answers to all those questions are provided in this Episode, and of course in their book.
Episode 78: Fault Tolerance with Bob Hanmer Pt. 2
This is the second part of the discussion on fault tolerance with Bob Hanmer (if you didn’t listen to Episode 77, which contains part one, please go back and listen now; this episode builds on that previous one!)
We start by discussing a set of error detection patterns. Among are the well-known approaches such as checksums and voting. We then look at error recovery patterns, including restart, rollback or roll forward. The next section looks
at error mitigation patterns, which include shedding load and doing fresh work before stale. The last patterns section then looks at fault treatment patterns.
We conclude the episode with a small discussion about how to design systems using (these and other) patterns, and with some thoughts on why actually wrote the book.
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