How can one optimize PHP image hosting scripts for better performance and scalability?

Issue: To optimize PHP image hosting scripts for better performance and scalability, one can implement caching mechanisms, utilize a content delivery network (CDN), optimize image sizes, and use lazy loading techniques. Code snippet: 

// Example of implementing caching mechanism using Memcached
$memcached = new Memcached();
$memcached->addServer('localhost', 11211);

$key = 'image_' . $imageId;
$imageData = $memcached->get($key);

if (!$imageData) {
    // Fetch image data from database or file system
    $imageData = getImageData($imageId);

    // Store image data in cache for future requests
    $memcached->set($key, $imageData, 3600); // Cache for 1 hour
}

// Output image data
echo $imageData;

Keywords

PHP image hosting optimization performance scalability

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