vandonr-amz commented on PR #30259:
URL: https://github.com/apache/airflow/pull/30259#issuecomment-1481698846

   just putting here for the sake of it a little test I did locally, with 100 
relatively simple dag files, each have 8 `Variable` calls (maybe you're going 
to tell me that's excessive and shouldn't be done, but hey, I didn't write 
those dags). I ran with and without this change, and logged the dag processing 
time. Having a cache improves the processing time a lot (the first parsing is 
always slower, I don't know exactly why in the "main" case, I excluded it from 
the min/max/avg)
   <img width="621" alt="image" 
src="https://user-images.githubusercontent.com/114772123/227310977-78c8f4eb-a9cc-4933-9a37-1ce63c30cabe.png";>


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