Dynamic business rules require very little data processing or indexing, so they do not impact Forge performance, Dgidx performance, or the MDEX Engine memory footprint.

However, because the MDEX Engine evaluates dynamic business rules at query time, rules affect the response-time performance of the MDEX Engine. The larger the number of rules, the longer the evaluation and response time. Evaluating more than twenty rules per query can have a noticeable effect on response time. For this reason, you should monitor and limit the number of rules that the MDEX Engine evaluates for each query.

In addition to large numbers of rules slowing performance, query response time is also slower if the MDEX Engine returns a large number of records. You can minimize this issue by setting a low value for the Maximum Records setting in the Style editor for a rule.