Performance tips

The performance of the library heavily depends on how the presentation rules are set up. The same result can usually be achieved in multiple ways, but some of them are faster, and some are slower. Please try to follow the below tips for better performance.

Writing presentation rulesets

• Define RequiredSchemas property for both rule sets and individual rules. That helps the library to filter-out uninteresting schemas which may contain a lot of information and thus improves performance.
• Make rule specifications as specific as possible. Most specifications require just part of information (e.g. the related class) and the library can find out the rest (e.g. the relationship). However, that required additional resources.
• Avoid IsRecursive=True in content specifications, if possible. It has a huge performance penalty and should only be used where absolutely necessary.

ECExpressions in rule conditions

• The rules engine is able to optimize some ECExpressions to improve their performance. Try using only the below symbols, if possible:
  • IsOfClass
  • IsInstanceNode
  • IsClassGroupingNode
  • IsPropertyGroupingNode
  • ClassName
  • InstanceId
• Avoid using ECInstance symbols where possible.