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perf: wrap list/grid components in React.memo to skip unnecessary re-renders#847

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ved015 wants to merge 3 commits intosupermemoryai:mainfrom
ved015:perf/usermsg
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perf: wrap list/grid components in React.memo to skip unnecessary re-renders#847
ved015 wants to merge 3 commits intosupermemoryai:mainfrom
ved015:perf/usermsg

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@ved015 ved015 commented Apr 10, 2026

Summary

  • Wrap UserMessage, WebsitePreview, YoutubePreview, and FilePreview in React.memo() to prevent unnecessary re renders
  • No behavioral or visual changes

Why

These components render inside lists/grids that can have 50+ items. Any parent state change (eg new streaming token in chat, selection toggle in grid) causes all of them to re render even though their props have not changed.

Impact

  • Skips re-renders for unchanged user messages during assistant streaming
  • Skips re-renders for unchanged preview cards in the document masonry grid
  • Particularly noticeable in long conversations and large document grids

@graphite-app graphite-app bot requested a review from Dhravya April 10, 2026 13:28
@ved015 ved015 changed the title perf : wrap UserMessage in React.memo to skip re-renders in chat list perf: wrap list/grid components in React.memo to skip unnecessary re-renders Apr 10, 2026
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