How can unnecessary traffic be minimized when loading data from a database in PHP?

Unnecessary traffic when loading data from a database in PHP can be minimized by using caching techniques. One common approach is to store the retrieved data in a cache (such as Memcached or Redis) after the initial retrieval, and then check the cache before making subsequent requests to the database. This helps reduce the number of database queries and improves performance. 

// Check if data exists in cache
$cacheKey = 'my_data_key';
$myData = $cache->get($cacheKey);

// If data is not in cache, retrieve from database and store in cache
if (!$myData) {
    $myData = fetchDataFromDatabase();
    $cache->set($cacheKey, $myData, $cacheExpirationTime);
}

// Use $myData for further processing

Keywords

Database optimization SQL queries caching lazy loading indexing

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