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Return early in GraphQL fill for primitive partial #2701

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Dec 12, 2023

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@Flufd Flufd commented Dec 7, 2023

Description

Optimises the GraphQL filler by returning early in the createValue function if we have a concrete partial value.


I was profiling some slower tests in admin and found that a lot of the time was spent calling faker's seed method. This is done with a stable seed for the particular branch/leaf node on the GraphQL document so that the random values for each node are stable. The re-seeding of the faker instance is slow, because it needs to reinitialise the mersenne twister that is used for RNG.

For large lists of known primitive values, such as currency or country codes, or other arrays of enums, which in the admin might be 200+ elements long for country codes, this becomes a performance issue. We are reseeding the faker instance for each element, even when not consuming it.


Another optimisation and some thoughts on random data in general:
#2700

@Flufd Flufd marked this pull request as ready for review December 7, 2023 15:47
@Flufd Flufd requested a review from a team as a code owner December 7, 2023 15:47
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Flufd commented Dec 7, 2023

/snapit

@Flufd Flufd force-pushed the graphql-fixtures/optimise-fill branch from 3b82927 to 656eade Compare December 7, 2023 16:00
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Flufd commented Dec 7, 2023

/snapit

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github-actions bot commented Dec 7, 2023

🫰✨ Thanks @Flufd! Your snapshot has been published to npm.

Test the snapshot by updating your package.json with the newly published version:

})),
});

expect(spy.mock.calls.length).toBeLessThan(100);
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Without this change, the seed is reset 8000+ times, with the change it is ~60

@Flufd Flufd force-pushed the graphql-fixtures/optimise-fill branch from 656eade to 75b01ee Compare December 7, 2023 21:02
@Flufd Flufd force-pushed the graphql-fixtures/optimise-fill branch from 75b01ee to 43ec02d Compare December 7, 2023 21:18
@Flufd Flufd merged commit 081fd65 into main Dec 12, 2023
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@Flufd Flufd deleted the graphql-fixtures/optimise-fill branch December 12, 2023 16:17
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3 participants