Symfony - MemcachedAdapter::__construct() 必须是 Memcached 的实例，给定字符串

Question

这很奇怪。我使用 Memcached 设置缓存如下：

framework.yaml

framework:
    cache:
        app: app.memcached_adapter

services.yaml

app.memcached_client:
    class: Memcached
    factory: 'Symfony\Component\Cache\Adapter\MemcachedAdapter::createConnection'
    arguments: [['%app.memcached.dsn.1%', '%app.memcached.dsn.2%']]
    public: true

app.memcached_adapter:
    class: Symfony\Component\Cache\Adapter\MemcachedAdapter
    arguments:
        - '@app.memcached_client'
    public: true

我能够清除终端中的缓存而没有任何错误，但是当我加载我的网站时，我得到以下信息：

Type error: Argument 1 passed to Symfony\Component\Cache\Adapter\MemcachedAdapter::__construct() 
must be an instance of Memcached, string given, called in 
/users/me/project/please-dont-mention-the-company/sports/var/cache/lcl/ContainerXqbuh45/srcLclDebugProjectContainer.php 
on line 1029

查看生成的容器类后，我发现：

/**
 * Gets the public 'cache.app' shared service.
 *
 * @return \Symfony\Component\Cache\Adapter\TraceableAdapter
 */
protected function getCache_AppService()
{
    return $this->services['cache.app'] = new \Symfony\Component\Cache\Adapter\TraceableAdapter(new \Symfony\Component\Cache\Adapter\MemcachedAdapter('kRTmoLLARw'));
}

我不知道它是如何以该字符串作为参数生成的，它应该是 memcached 客户端！

有什么想法吗？无需调试容器类生成，我可以检查什么？

Answer 1

您是否尝试过从 Service-Container 获取 CacheAdapter 而不是在此处创建新实例： return $this->services['cache.app'] = new \Symfony\Component\Cache\Adapter\TraceableAdapter( new \Symfony\Component\Cache\Adapter\MemcachedAdapter('kRTmoLLARw') // new instance? );