Senior LevelGit & GitHub
How does VFS for Git virtualize filesystem downloads on demand?
❓ Interview Prompt: Explain Virtual Filesystem for Git (VFS / Scalar), OS filesystem drivers (ProjFS), on-demand file hydration, and multi-terabyte repo scaling.
VFS for Git intercepts OS file reads via filesystem drivers (ProjFS), downloading file contents dynamically from remote servers on-demand only when accessed by applications.
Code Implementation Example
markdown
1. Placeholder (0-byte virtual file)
2. Hydrated (Downloaded on open)
3. Modified (Staged)💡VFS for Git on-demand virtual file hydration lifecycle.
🎯 Interview Key Takeaway
VFS for Git intercepts OS file reads to download file contents dynamically only when accessed by applications.
#VFS for Git#Virtualization#Monorepo#Senior
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