<?php
namespace Cake\Cache;
use BadMethodCallException;
use Cake\Core\App;
use Cake\Core\ObjectRegistry;
use RuntimeException;
class CacheRegistry extends ObjectRegistry
{
/**
* Resolve a cache engine classname.
*
* Part of the template method for Cake\Core\ObjectRegistry::load()
*
* @param string $class Partial classname to resolve.
* @return string|false Either the correct classname or false.
*/
protected function _resolveClassName($class)
{
if (is_object($class)) {
return $class;
}
return App::className($class, 'Cache/Engine', 'Engine');
}The cache is the buffer for data exchange (called Cache). When a piece of hardware wants to read data, it will first search for the required data from the cache. If it is found, it will be executed directly. If it cannot be found, it will be executed from the cache. Search in memory. Since cache runs much faster than memory, the purpose of the cache is to help the hardware run faster.
Because the cache often uses RAM (non-permanent storage that is lost when the power is turned off), the files will still be sent to the hard disk and other storage for permanent storage after use. The largest cache in a computer is the memory stick. The fastest ones are the L1 and L2 caches built into the CPU. The video memory of the graphics card is a cache for the graphics card's computing chip. There is also a 16M or 32M cache on the hard disk.
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