BXMSDOC-5900: Added lambda introspection section in performance tunin…

…g chapter
hmanwani-rh · Jun 22, 2020 · e66384c · e66384c
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diff --git a/...cs/src/main/asciidoc/DecisionEngine/performance-tuning-decision-engine-ref.adoc b/...cs/src/main/asciidoc/DecisionEngine/performance-tuning-decision-engine-ref.adoc
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 For information about built-in event listeners and debug logging in the {DECISION_ENGINE}, see xref:engine-event-listeners-con_decision-engine[].
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+Configure `LambdaIntrospector` cache size for an executable model build::::
+You can configure the size of `LambdaIntrospector.methodFingerprintsMap` cache, which is used in an executable model build. The default size of the cache is `32`. When you configure smaller value for the cache size, it reduces memory usage. For example, you can configure system property `drools.lambda.introspector.cache.size` to `0` for minimum memory usage. Note that smaller cache size also slows down the build performance.