Notes on software and the ideas behind it
Find the meaning
behind the code.
I’m Fred Yang. I write about software—how it works, why it behaves the way it does, and the ideas that make code easier to reason about.
Open the notebookWorking notes / 2026
Recently mapped
Architecture, reactivity, and the hidden relationships that shape frontend systems.
SharePoint
Site Definition and site configuration
<p> A site definition defines a unique <b>type</b> of SharePoint site. There are five site definitions natively installed in Windows SharePoint Services. A site definition can include more than one site definition configuration. SharePoint...
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field note
feature difference between MOSS standard and MOSS enterprise
The following features are available with the Standard license type:
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SharePoint
security in central admin site
<p> The previous section described how the user web site works. But how do you modify the inner guts of WSS? You may remember that I said that the account used during the installation...
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SharePoint
sharepoint hidden url
<p>
sharepoint template gallery: http://b-wss1:81/_catalogs/wt/Forms/Common.aspx
</p>
<p>
http://wss1:8088/_vti_bin/SharePointEmailWS.asmx
</p>
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field note
Workflow persistence
<p>
What triggers persistence?
<ul>
<li>
Runtime decides when to persist
</li>
<li>
Persistence service decides how and where
</li>
<li>
<div>Conditions:</div>
<ul>
<li>
Anytime the WF goes idle (e.g. Delay Activity)
</li>
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