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.
Direct download: seradio-episode78-faultToleranceWithBobHanmer_pt2.mp3
Category:Episodes -- posted at: 11:58am CET

In this Episode we discuss fault tolerance based on the new book by Bob Hanmer. This is the actually the first part of the discussion, the remainder will be published in the next episode of SE Radio. We start by discussing some of the context for fault tolerant systems and the imperfect world assumption. We then discuss a number of terms we will need when discussing the fault tolerance patterns. We then discuss the fault tolerance mindset and connect fault tolerance to a number of related subject areas, such as software quality. We then discuss the shared context for the patterns that follow, among them the important observation that fault tolerance does not come for free! Finally we provide an overview over the different sections covered in the book and start the detailed discussion of the patterns by looking at the Architectural Patterns section. The next episode will discuss the remaining patterns in the book.
Direct download: seradio-episode77-faultToleranceWithBobHanmer_pt1.mp3
Category:Episodes -- posted at: 8:08pm CET

In this special Episode we briefly discuss the upcoming Patterns Journal with the two editors, Ralph Johnson and James Noble.
Direct download: seradio-episode76-thePatternsJournal.mp3
Category:Episodes -- posted at: 8:17pm CET

In this special Episode we briefly discuss our new website. We will migrate to our new website during the coming week. If you experience any difficulties, contact the team or temporarily go to the old site at seradio.libsyn.com.
Direct download: seradio-episode75-theNewWebsite.mp3
Category:Episodes -- posted at: 4:18pm CET

Enterprise Architecture is already common practice in most Fortune 100 companies. As the topic is comparably young, knowledge about it is not so widespread in the Software Architects Community, who deals mostly with project architectures. In this episode Alex speaks with Wolfgang Keller who has practical experience as an enterprise architect and has written a book on the topic. He is a Partner with BusinessGlue Consulting. They are specializing in the relationship between EAM and SOA. This episode gives a rough overview what Enterprise Architecture actually is touches the standards in the field and also gives hints on the practical work of Enterprise Architects.
Direct download: seradio-episode74-enterpriseArchitecture_II_withWolfgangKeller.mp3
Category:Episodes -- posted at: 12:35pm CET

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