Symfony HTTP Cache doesn't work in 3.4

Question

I've tested code form Symfony Docs in Symfony 3.2 and it was everything good, but cache doesn't work in 3.4.8.

Of courese I want to use Symfony Reverse Proxy.

My app_dev.php

$kernel = new AppKernel('dev', true);
if (PHP_VERSION_ID < 70000) {
    $kernel->loadClassCache();
}
$kernel = new AppCache($kernel);

My action look's like this:

public function indexAction(Request $request)
{
    // [...]
    $response = $this->render('base.html.twig');

    $response->setSharedMaxAge(3600);

        return $response;
}

Am I missing something, that isn't nessesery in Symfony 3.2?

Answer 1

I found it's imposible, by some Symfony 3.4 bug. I used Symfony Cache Component instead https://symfony.com/doc/current/components/cache.html.

Answer 2

Symfony decided to deprecate the entire ClassLoader component for Symfony 3.3+.

In this case line below is no longer available

$kernel->loadClassCache(); // deprecated

In this case you should use class loader provided by Composer. If you are not using PHP 7.0 yet, you should stay with Symfony 3.2.

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Useful links

New in Symfony 3.3: Deprecated the ClassLoader component

Autoloader Optimization