webui: add lazy markdown loading for improved performance#19557
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shem-aleph wants to merge 1 commit into
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webui: add lazy markdown loading for improved performance#19557shem-aleph wants to merge 1 commit into
shem-aleph wants to merge 1 commit into
Conversation
Add LazyMarkdownContent component that defers markdown rendering until messages scroll into view. This significantly improves load times for conversations with many messages (500+ messages would previously timeout). Changes: - New LazyMarkdownContent.svelte using IntersectionObserver - ChatMessageAssistant uses lazy loading for completed messages, eager rendering for streaming messages - ChatMessageUser and ChatMessageSystem use lazy loading - Short messages (<200 chars) render immediately for responsiveness The component shows a lightweight text placeholder until the message enters the viewport (with 200px margin for preloading), then renders full markdown with syntax highlighting, KaTeX, etc.
Contributor
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Let's come back to this after we have #18655 merged which should be very soon :) |
Contributor
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Superseded by #20999 |
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Summary
Add
LazyMarkdownContentcomponent that defers markdown rendering until messages scroll into view. This significantly improves load times for conversations with many messages.Problem
Conversations with 500+ messages would timeout or take several minutes to load because all
MarkdownContentcomponents initialize simultaneously, each running the full remark/rehype pipeline (GFM, KaTeX, syntax highlighting, etc.).Solution
New
LazyMarkdownContentwrapper that:IntersectionObserverto detect when messages enter viewportChanges
LazyMarkdownContent.svelte- new component with IntersectionObserverChatMessageAssistant.svelte- uses lazy for completed, eager for streamingChatMessageUser.svelte- uses lazy loadingChatMessageSystem.svelte- uses lazy loadingindex.ts- exports new componentTesting
npm run checkpasses with 0 errors