7x performance improvement #962
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Hi ! Two weeks ago I made a PR improving the
pascalfunction, because it was a bottleneck. I continued investigating and I found that it was often called with the same values. So this PR adds a very simple cache to this function, with a tremendous impact on performance.Obvious duplicated calls to the pascal function
Hidden duplicated calls
Some calls are made from different places of the codebase with the same input.
Solution proposed
A simple object acting as a cache.
Screenshots of the result
Before
After
99.9%+ hit ratio, this is huge !
Also, we can see that the memory does not grow too much, even with 15 million calls to the
pascalfunction, it have only 10k keys, so it does not damage the user's memory. ✅ No need for a real cache library.Going further
The default
petstore.ymlreally is not a good OpenAPI doc to test on, because we can see that it does not have the size of a real project. Maybe a good idea for the future might be to test on a bigger document ?