Making cache tags more efficient by rewriting the API.

Related to php-cache/issues#21

Author: Nyholm

MemcachedCachePool.php

@@ -41,7 +41,7 @@ public function __construct(\Memcached $cache)
     protected function fetchObjectFromCache($key)
     {
         if (false === $result = unserialize($this->cache->get($this->getHierarchyKey($key)))) {
-            return [false, null];
+            return [false, null, []];
         }
 
         return $result;
@@ -67,17 +67,17 @@ protected function clearOneObjectFromCache($key)
         return $this->cache->getResultCode() === \Memcached::RES_NOTFOUND;
     }
 
-    protected function storeItemInCache($key, CacheItemInterface $item, $ttl)
+    protected function storeItemInCache(CacheItemInterface $item, $ttl)
     {
         if ($ttl === null) {
             $ttl = 0;
         } elseif ($ttl < 0) {
             return false;
         }
 
-        $key = $this->getHierarchyKey($key);
+        $key = $this->getHierarchyKey($item->getKey());
 
-        return $this->cache->set($key, serialize([true, $item->get()]), $ttl);
+        return $this->cache->set($key, serialize([true, $item->get(), []]), $ttl);
     }
 
     protected function getValueFormStore($key)

Tests/IntegrationTagTest.php

@@ -33,7 +33,7 @@
     },
     "require-dev":       {
         "phpunit/phpunit":         "^4.0|^5.1",
-        "cache/integration-tests": "0.7.0"
+        "cache/integration-tests": "0.9.0"
     },
     "provide":           {
         "psr/cache-implementation": "^1.0"