How could storing filter keywords in a MySQL database impact the efficiency of the filter program?

Storing filter keywords in a MySQL database could impact the efficiency of the filter program due to the overhead of database queries for each filtering operation. To improve efficiency, you can cache the filter keywords in memory using techniques like memcached or Redis. 

// Connect to MySQL database
$mysqli = new mysqli("localhost", "username", "password", "database");

// Check if the filter keywords are already cached
$keywords = $memcached->get("filter_keywords");

if (!$keywords) {
    // Fetch filter keywords from MySQL database
    $result = $mysqli->query("SELECT keyword FROM filter_keywords");
    
    // Store filter keywords in cache
    $keywords = [];
    while ($row = $result->fetch_assoc()) {
        $keywords[] = $row['keyword'];
    }
    
    $memcached->set("filter_keywords", $keywords);
}

// Use the filter keywords for filtering operations
foreach ($keywords as $keyword) {
    // Filter logic here
}

Keywords

MySQL database filter program efficiency storing keywords

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