How can the server load be optimized when serving images from a filesystem cache in PHP?

When serving images from a filesystem cache in PHP, the server load can be optimized by implementing proper caching techniques such as setting appropriate cache headers, using lazy loading to only load images when needed, and implementing image resizing and compression to reduce file size and load time. 

// Example PHP code snippet for serving images from a filesystem cache with optimized server load

// Set appropriate cache headers
header('Cache-Control: public, max-age=3600'); // Cache images for 1 hour

// Lazy loading implementation
$imagePath = '/path/to/image.jpg';
if (file_exists($imagePath)) {
    header('Content-Type: image/jpeg');
    readfile($imagePath);
} else {
    header("HTTP/1.0 404 Not Found");
}

// Image resizing and compression
// Implement image resizing and compression techniques as needed

Keywords

server load optimization images filesystem cache PHP

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