Tag Archives: system architecture

Roles and Permissions Matrix

This technique involves the specification of actions that are allowed to be taken by actors in different, defined roles in an organization. While these can and should be defined in general use, as a practical matter this most often comes … Continue reading

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TWSL Series 11: BA Overlaps with Other Practice Areas

Today I gave this webinar for the Tom Woods School of Life Lunch and Learn Series. The slides are here.

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Three Layers of Architecture, and Three Dimensions of Iterative Phase Loops

As I’ve been developing my engagement framework over the past few years, I have sometimes struggled to classify the exact phase in which certain activities take place. Or, more to the point, I have sometimes had difficulty contextualizing multiple different … Continue reading

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BA Webinar Series 10: Business Analysis Overlaps with Other Practice Areas

Today I gave this webinar for the Tampa IIBA Lunch and Learn Series. The slides are here.

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Monitoring System Health and Availability, and Logging: Part 4

One more piece of context must be added to the discussion I’ve written up here, here, and here, and that is the place of these operations in the 7-layer OSI communications model. The image above is copied from and linked … Continue reading

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Monitoring System Health and Availability, and Logging: Part 3

Now that we’ve described how to sense error states and something about how to record logging information on systems running multiple processes, we’ll go into some deeper aspects of these activities. We’ll first discuss storing information so errors can be … Continue reading

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Monitoring System Health and Availability, and Logging: Part 2

Continuing yesterday’s discussion of monitoring and logging, I wanted to work through a few specific cases and try to illustrate how things can be sensed in an organized way, and especially how errors of various types can be detected. To … Continue reading

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Monitoring System Health and Availability, and Logging: Part 1

Ongoing Monitoring, or, What’s Happening Now? Any system with multiple processes or machines linked by communication channels must address real-time and communication issues. One of the important issues in managing such a system is monitoring it to ensure all of … Continue reading

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Designing and Documenting Inter-Process Communication Links

I’ve touched on the subject of inter-process communication previously here and here, but now that I’m charged with doing a lot of this formally I wanted to discuss the process in more detail. I’m sharing this in outline form to … Continue reading

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Of Pencils, the Division of Labor, Building Teams, and Knowing What the Heck Is Going On

The conversation at the watering hole after this evening’s CharmCityJS Meetup was interesting as usual. In between talking with and encouraging some of the younger attendees and speakers I spoke with a senior developer about a contract he was finishing … Continue reading

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