perf(git): pause git status polling when page is hidden#600
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useGitStatus polls GET /api/git/status every 10s via setInterval, regardless of page visibility. Each poll spawns a git subprocess on the server side — in large repos this takes 200-500ms. Combined with the notification poll (5s), the app makes at least 1 HTTP request every 5 seconds even when the user is on a different tab or the window is minimized. Fix: stop the interval when document.visibilityState === 'hidden' and restart it (with an immediate fetch) when the page becomes visible again. The git-refresh custom event listener remains active so manual refreshes still work regardless of visibility state.
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This was referenced Jun 4, 2026
HUQIANTAO
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worktree-product-refactor-research
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Problem
useGitStatuspollsGET /api/git/statusevery 10 seconds viasetInterval, unconditionally. Each poll spawns agit statussubprocess on the server side — in large repos this takes 200–500ms. The polling continues even when:Combined with the notification poll (5s interval), the app makes at least 1 HTTP request every 5 seconds even when completely idle.
Fix
Implement visibility-aware pause/resume:
setIntervalentirely. No polls, no HTTP requests, no subprocess spawns.git-refreshcustom event listener remains active regardless of visibility state.This eliminates all background git polling when the app isn't being actively viewed, reducing both CPU (no subprocess spawns) and network overhead.