KeyValueMemoryFactory.php

<?php

namespace Drupal\Core\KeyValueStore;


/**
 * Defines the key/value store factory for the memory backend.
 */
class KeyValueMemoryFactory implements KeyValueFactoryInterface {
    
    /**
     * An array of keyvalue collections that are stored in memory.
     *
     * @var array
     */
    protected $collections = [];
    
    /**
     * {@inheritdoc}
     */
    public function get($collection) {
        if (!isset($this->collections[$collection])) {
            $this->collections[$collection] = new MemoryStorage($collection);
        }
        return $this->collections[$collection];
    }

}