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Checklist: XML Performance

Source: http://msdn.microsoft.com/library/en-us/dnpag/html/ScaleNetCheck10.asp
J.D. Meier, Srinath Vasireddy, Ashish Babbar, Rico Mariani, and Alex Mackman

Design Considerations

* Choose the appropriate XML class for the job.
* Consider validating large documents.
* Process large documents in chunks, if possible.
* Use streaming interfaces.
* Consider hard-coded transformations.
* Consider element and attribute name lengths.
* Consider sharing the XmlNameTable.

Parsing XML

* Use XmlTextReader to parse large XML documents.
* Use XmlValidatingReader for validation.
* Consider combining XmlReader and XmlDocument.
* On the XmlReader, use the MoveToContent and Skip methods to skip unwanted items.

Validating XML

* Use XmlValidatingReader.
* Do not validate the same document more than once.
* Consider caching the schema.

Writing XML

* Use XmlTextWriter.

XPath Queries

* Use XPathDocument to process XPath statements.
* Avoid the // operator by reducing the search scope.
* Compile both dynamic and static XPath expressions.

XSLT Processing

* Use XPathDocument for faster XSLT transformations.
* Consider caching compiled style sheets.
* Consider splitting complex transformations into several stages.
* Minimize the size of the output document.
* Write efficient XSLT.

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