cachestorage.php

См. документацию.

<?php
 
namespace Bitrix\Main\Data\LocalStorage\Storage;
 
use Bitrix\Main\Application;
use Bitrix\Main\Data\Cache;
 
class CacheStorage implements StorageInterface
{
    private const CACHE_DIR = 'local-session';

    private $baseDir;
    private $cacheEngine;
 
    public function __construct(CacheEngineInterface $cacheEngine)
    {
        $this->cacheEngine = $cacheEngine;
        $this->baseDir = Application::getPersonalRoot() . '/cache/';
    }
 
    public function read(string $key, int $ttl)
    {
        $initDir = $this->getDirname($key);
        $filename = $this->getFilename($key);
 
        if ($this->cacheEngine->read($value, $this->baseDir, $initDir, $filename, $ttl))
        {
            return $value;
        }
 
        return null;
    }
 
    public function write(string $key, $value, int $ttl)
    {
        $initDir = $this->getDirname($key);
        $filename = $this->getFilename($key);
 
        $this->cacheEngine->write($value, $this->baseDir, $initDir, $filename, $ttl);
    }
 
    private function getDirname(string $key): string
    {
        return self::CACHE_DIR . '/'. substr(md5($key), 0, 3);
    }
 
    private function getFilename(string $key): string
    {
        return '/' . Cache::getPath($key);
    }
}