Public disk and symbolic links in Laravel - Performance & Optimization

Performance: Public disk and symbolic links

MEDIUM IMPACT

This concept affects page load speed by controlling how static files are served and how quickly the browser can access public assets.

Serving user-uploaded files efficiently in a Laravel app

Laravel

Create a symbolic link from public/storage to storage/app/public using 'php artisan storage:link'.

This avoids file duplication by linking directly to storage, enabling faster file access.

📈 Performance GainReduces disk usage and speeds up asset delivery, improving LCP.

Serving user-uploaded files efficiently in a Laravel app

Laravel

Copy user files from storage/app/public to public/ manually or on every request.

This duplicates files and causes unnecessary disk usage and slower file access.

📉 Performance CostAdds extra disk I/O and delays page load due to file copying.

Performance Comparison

Pattern	DOM Operations	Reflows	Paint Cost	Verdict
Manual file copying to public folder	N/A	N/A	Increased due to slower asset load	[X] Bad
Symbolic link from public/storage to storage/app/public	N/A	N/A	Minimal, fast asset load	[OK] Good

Rendering Pipeline

When a browser requests a public asset, the web server resolves the symbolic link to the actual storage location, serving the file without extra copying.

→Network Request

→File System Access

→Browser Rendering

⚠️ BottleneckFile System Access when copying files instead of linking

Core Web Vital Affected

LCP

This concept affects page load speed by controlling how static files are served and how quickly the browser can access public assets.

Optimization Tips

1Use 'php artisan storage:link' to create symbolic links instead of copying files.

2Avoid duplicating files to reduce disk usage and speed up asset delivery.

3Fast access to public disk files improves Largest Contentful Paint (LCP).

Performance Quiz - 3 Questions

What is the main performance benefit of using a symbolic link for Laravel's public disk?

A Avoids duplicating files and speeds up asset delivery

B Increases security by hiding files

C Automatically compresses files for faster loading

D Reduces server CPU usage by caching files

DevTools: Network

How to check: Open DevTools, go to Network tab, reload the page, and check the loading time and size of assets served from storage.

What to look for: Look for fast response times and no extra delays caused by file copying or missing files.