What role does caching play in optimizing the performance of an email sending system in PHP?

Caching can play a crucial role in optimizing the performance of an email sending system in PHP by reducing the load on the server and improving response times. By caching commonly used data such as email templates or SMTP configurations, the system can avoid repetitive database queries or file reads, resulting in faster email processing and delivery. 

// Example of caching email templates in PHP using Memcached

// Connect to Memcached server
$memcached = new Memcached();
$memcached->addServer('localhost', 11211);

// Check if the template is already cached
$template = $memcached->get('email_template');

if (!$template) {
    // If not cached, fetch the template from the database
    $template = fetch_email_template_from_database();

    // Cache the template for future use
    $memcached->set('email_template', $template, 3600); // Cache for 1 hour
}

// Use the cached template to send the email
send_email($template);

Keywords

caching performance optimization email sending system PHP caching role

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