带有 Symfony 反向代理的 FOSHttpCache

Question

所以我正在尝试使用默认的 Symfony HttpCache 配置 FOSHttpCacheBundle (latest release ^2.0)。

这里是我根据the docsAppCache.php的内容：

<?php

use FOS\HttpCache\SymfonyCache\CacheInvalidation;
use FOS\HttpCache\SymfonyCache\EventDispatchingHttpCache;
use FOS\HttpCache\SymfonyCache\DebugListener;
use FOS\HttpCache\SymfonyCache\CustomTtlListener;
use FOS\HttpCache\SymfonyCache\PurgeListener;
use FOS\HttpCache\SymfonyCache\RefreshListener;
use FOS\HttpCache\SymfonyCache\UserContextListener;
use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\HttpKernel\HttpCache\HttpCache;
use Symfony\Component\HttpKernel\HttpKernelInterface;
use Symfony\Component\HttpKernel\HttpCache\StoreInterface;
use Symfony\Component\HttpKernel\HttpCache\SurrogateInterface;

class AppCache extends HttpCache implements CacheInvalidation
{
    use EventDispatchingHttpCache;

    /**
     * Overwrite constructor to register event listeners for FOSHttpCache.
     */
    public function __construct(
        HttpKernelInterface $kernel,
        StoreInterface $store,
        SurrogateInterface $surrogate = null,
        array $options = []
    ) {
        parent::__construct($kernel, $store, $surrogate, $options);

        $this->addSubscriber(new CustomTtlListener());
        $this->addSubscriber(new PurgeListener());
        $this->addSubscriber(new RefreshListener());
        $this->addSubscriber(new UserContextListener());
        if (isset($options['debug']) && $options['debug']) {
            $this->addSubscriber(new DebugListener());
        }
    }

    /**
     * Made public to allow event listeners to do refresh operations.
     *
     * {@inheritDoc}
     */
    public function fetch(Request $request, $catch = false)
    {
        return parent::fetch($request, $catch);
    }
}

现在根据 Symfony docs，启用缓存代理只需按如下方式设置 app.php 文件（取消最后一行的注释）：

$kernel = new AppKernel('prod', false);
$kernel->loadClassCache();
$kernel = new AppCache($kernel);

这让我很高兴：

PHP message: PHP Catchable fatal error: Argument 2 passed to Symfony\Component\HttpKernel\HttpCache\HttpCache::__construct() must be an instance of Symfony\Component\HttpKernel\HttpCache\StoreInterface, none given, called in /php/api/current/web/app.php on line 11 and defined in /php/api/current/vendor/symfony/symfony/src/Symfony/Component/HttpKernel/HttpCache/HttpCache.php on line 78

鉴于 HttpCache class 构造函数，这非常有意义。

所以问题是，是文档不是最新的，还是只是我遗漏了一些非常明显的东西？

Answer 1

use Symfony\Component\HttpKernel\HttpCache\Store;

$kernel = new AppKernel('dev', true);
$kernel->loadClassCache();
$store = new Store('app/cache');
$kernel = new AppCache($kernel, $store);

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