Detailed Guide to PHPcms Category Cache Storage and Optimization

Function of Category Cache

In PHPcms, category cache is used to quickly retrieve category data, reducing database queries and improving website access speed. For sites with large amounts of data, enabling category cache is an essential performance optimization step.

Storage Locations of Category Cache

PHPcms category cache can be stored in different locations, mainly including:

• File Cache: Category data is stored in files, reducing database queries, but file read/write permissions must be considered.
• Memory Cache: Category data is stored in memory, which speeds up data retrieval, but sufficient server memory is required.
• Database Cache: Category data is stored in the database, which is convenient for management and maintenance, but database performance must be monitored.

Code Examples

The following example demonstrates how to implement category cache in PHPcms using file cache:

Enable Category Cache

$Config = array(
    'cache' => array(
        'type' => 'file',
        'path' => './cache/',
    ),
);

Retrieve Category Data and Store in Cache

$catid = 1; // Category ID
$catinfo = get_cache('category_'.$catid); // Get category data from cache

if(empty($catinfo)){ // If cache does not exist
    $catinfo = get_category($catid); // Retrieve category data
    set_cache('category_'.$catid, $catinfo); // Store category data in cache
}

// Use the category data...

Clear Cache

$catid = 1; // Category ID
delete_cache('category_'.$catid); // Clear the cache for the specified category

Using these examples, you can store and clear category data in cache, thereby improving website access speed and overall performance.

In conclusion, category cache is a crucial optimization feature in PHPcms. Properly setting cache storage locations and applying the example code can effectively enhance website performance and user experience.