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Core: Optimize storiesHash by removing unused parameters #11624

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Merged
merged 3 commits into from
Jul 21, 2020
Merged

Core: Optimize storiesHash by removing unused parameters #11624

merged 3 commits into from
Jul 21, 2020

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@shilman
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@shilman shilman commented Jul 21, 2020 •
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Issue: #11618 #11229

What I did

storiesHash is the manager-side version of the story store. Currently it's doing a bunch of unnecessary work merging story parameters up the hierarchy of stories/groups/roots, which can be slow for storybooks with large sets of parameters.

With @ndelangen:

  • Removed parameters for the root node (which we believe is safe)
  • Only propagate viewMode and docsOnly parameters up the tree, as they are used in group nodes

Performance implications

We saw a minor perf improvement on official-storybook. We assume this would be more pronounced for a more parameter-heavy/deeply nested storybook:

  • Before: setStories = 885ms
  • After: setStories = 640ms

How to test

  • CI / updated snapshots
  • Run official-storybook and verify
    • Search
    • Docs-only stories
    • View-mode stories

@shilman shilman added this to the 6.0 milestone Jul 21, 2020
tmeasday
tmeasday approved these changes Jul 21, 2020
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LGTM

@shilman shilman merged commit fd511fc into next Jul 21, 2020
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@tmeasday tmeasday tmeasday approved these changes

@ndelangen ndelangen ndelangen approved these changes

@igor-dv igor-dv Awaiting requested review from igor-dv

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@shilman @tmeasday @ndelangen