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New in Symfony 3.3: Memcached Cache Adapter

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[开发(php) 所属分类 开发(php) | 发布者 店小二03 | 时间 2017 | 作者 红领巾 ] 0人收藏点击收藏

Contributed by

Rob Frawley and Nicolas Grekas

in #20858 and #21108 .

The Symfony Cache component includes several adapters to support different caching mechanisms such as Redis, APCu, the filesystem, etc. In Symfony 3.3, we added a new adapter for Memcached .

When using it as a component, create first the connection to the Memcached server and then instantiate the new adapter:

use Symfony\Component\Cache\Adapter\MemcachedAdapter; $client = MemcachedAdapter::createConnection('memcached://localhost'); $cache = new MemcachedAdapter(\Memcached $client, $namespace = '', $defaultLifetime = 0);

In addition to simple servers, the connection can also be a cluster of Memcached instances with all kinds of custom configuration:

$client = MemcachedAdapter::createConnection(array( // format => memcached://[user:pass@][ip|host|socket[:port]][?weight=int] // 'weight' ranges from 0 to 100 and it's used to prioritize servers 'memcached://my.server.com:11211' 'memcached://rmf:[email protected]' 'memcached://127.0.0.1?weight=50' 'memcached://username:the-password@/var/run/memcached.sock' 'memcached:///var/run/memcached.sock?weight=20' ));

When used in a Symfony application, it's even simpler to configure and use Memcached:

# app/config/config_prod.yml framework: cache: # defaults to memcached://localhost default_memcached_provider: "memcached://my.server.com:11211" # ... pools: app.cache.products: adapter: cache.adapter.memcached public: true # ...

Now you can start storing and fetching items in your Memcached-based cache:

$cacheProduct = $this->get('app.cache.products')->getItem($productId); if (!$cacheProduct->isHit()) { $product = ... $cacheProduct->set($product); $this->get('app.cache.products')->save($cacheProduct); } else { $product = $cacheProduct->get(); }

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