search the forum for this terminology to see discussions on it, but basically you have a global variable in a project script that caches your api results. You only need to use the API if it doesn't already exist in the dictionary.
examples:
Global Scripting Variables (Library Script Top-Level Vars) - Ignition - Inductive Automation Forum
Imperial/Metric conversion: Where do you put your single source of truth? - Ignition - Inductive Automation Forum
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