diff --git a/src/Symfony/Bundle/FrameworkBundle/Resources/config/cache.xml b/src/Symfony/Bundle/FrameworkBundle/Resources/config/cache.xml
index f7162adb1c701..d0e596ab83338 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Resources/config/cache.xml
+++ b/src/Symfony/Bundle/FrameworkBundle/Resources/config/cache.xml
@@ -15,6 +15,10 @@
             <argument type="service" id="cache.app" />
         </service>
 
+        <service id="cache.app.taggable" class="Symfony\Component\Cache\Adapter\TagAwareAdapter">
+            <argument type="service" id="cache.app" />
+        </service>
+
         <service id="cache.system" parent="cache.adapter.system" public="true">
             <tag name="cache.pool" />
         </service>
@@ -122,7 +126,9 @@
         <service id="cache.global_clearer" parent="cache.default_clearer" public="true" />
         <service id="cache.app_clearer" alias="cache.default_clearer" public="true" />
         <service id="Psr\Cache\CacheItemPoolInterface" alias="cache.app" />
+        <service id="Symfony\Component\Cache\TaggableCacheInterface" alias="cache.app.taggable" />
         <service id="Psr\SimpleCache\CacheInterface" alias="cache.app.simple" />
         <service id="Symfony\Component\Cache\Adapter\AdapterInterface" alias="cache.app" />
+        <service id="Symfony\Component\Cache\CacheInterface" alias="cache.app" />
     </services>
 </container>
diff --git a/src/Symfony/Component/Cache/Adapter/AbstractAdapter.php b/src/Symfony/Component/Cache/Adapter/AbstractAdapter.php
index 3afc982089018..1e246b8790cb4 100644
--- a/src/Symfony/Component/Cache/Adapter/AbstractAdapter.php
+++ b/src/Symfony/Component/Cache/Adapter/AbstractAdapter.php
@@ -15,17 +15,20 @@
 use Psr\Log\LoggerAwareInterface;
 use Psr\Log\LoggerInterface;
 use Psr\Log\NullLogger;
+use Symfony\Component\Cache\CacheInterface;
 use Symfony\Component\Cache\CacheItem;
 use Symfony\Component\Cache\Exception\InvalidArgumentException;
 use Symfony\Component\Cache\ResettableInterface;
 use Symfony\Component\Cache\Traits\AbstractTrait;
+use Symfony\Component\Cache\Traits\GetTrait;
 
 /**
  * @author Nicolas Grekas <p@tchwork.com>
  */
-abstract class AbstractAdapter implements AdapterInterface, LoggerAwareInterface, ResettableInterface
+abstract class AbstractAdapter implements AdapterInterface, CacheInterface, LoggerAwareInterface, ResettableInterface
 {
     use AbstractTrait;
+    use GetTrait;
 
     private static $apcuSupported;
     private static $phpFilesSupported;
diff --git a/src/Symfony/Component/Cache/Adapter/ArrayAdapter.php b/src/Symfony/Component/Cache/Adapter/ArrayAdapter.php
index fee7ed6d906d5..17f2beaf0fe75 100644
--- a/src/Symfony/Component/Cache/Adapter/ArrayAdapter.php
+++ b/src/Symfony/Component/Cache/Adapter/ArrayAdapter.php
@@ -13,16 +13,19 @@
 
 use Psr\Cache\CacheItemInterface;
 use Psr\Log\LoggerAwareInterface;
+use Symfony\Component\Cache\CacheInterface;
 use Symfony\Component\Cache\CacheItem;
 use Symfony\Component\Cache\ResettableInterface;
 use Symfony\Component\Cache\Traits\ArrayTrait;
+use Symfony\Component\Cache\Traits\GetTrait;
 
 /**
  * @author Nicolas Grekas <p@tchwork.com>
  */
-class ArrayAdapter implements AdapterInterface, LoggerAwareInterface, ResettableInterface
+class ArrayAdapter implements AdapterInterface, CacheInterface, LoggerAwareInterface, ResettableInterface
 {
     use ArrayTrait;
+    use GetTrait;
 
     private $createCacheItem;
 
diff --git a/src/Symfony/Component/Cache/Adapter/ChainAdapter.php b/src/Symfony/Component/Cache/Adapter/ChainAdapter.php
index 98b0cc24693b4..ea0af87d9f238 100644
--- a/src/Symfony/Component/Cache/Adapter/ChainAdapter.php
+++ b/src/Symfony/Component/Cache/Adapter/ChainAdapter.php
@@ -13,10 +13,12 @@
 
 use Psr\Cache\CacheItemInterface;
 use Psr\Cache\CacheItemPoolInterface;
+use Symfony\Component\Cache\CacheInterface;
 use Symfony\Component\Cache\CacheItem;
 use Symfony\Component\Cache\Exception\InvalidArgumentException;
 use Symfony\Component\Cache\PruneableInterface;
 use Symfony\Component\Cache\ResettableInterface;
+use Symfony\Component\Cache\Traits\GetTrait;
 
 /**
  * Chains several adapters together.
@@ -26,8 +28,10 @@
  *
  * @author Kévin Dunglas <dunglas@gmail.com>
  */
-class ChainAdapter implements AdapterInterface, PruneableInterface, ResettableInterface
+class ChainAdapter implements AdapterInterface, CacheInterface, PruneableInterface, ResettableInterface
 {
+    use GetTrait;
+
     private $adapters = array();
     private $adapterCount;
     private $syncItem;
@@ -61,6 +65,8 @@ function ($sourceItem, $item) use ($defaultLifetime) {
                 $item->expiry = $sourceItem->expiry;
                 $item->isHit = $sourceItem->isHit;
 
+                $sourceItem->isTaggable = false;
+
                 if (0 < $sourceItem->defaultLifetime && $sourceItem->defaultLifetime < $defaultLifetime) {
                     $defaultLifetime = $sourceItem->defaultLifetime;
                 }
@@ -75,6 +81,33 @@ function ($sourceItem, $item) use ($defaultLifetime) {
         );
     }
 
+    /**
+     * {@inheritdoc}
+     */
+    public function get(string $key, callable $callback)
+    {
+        $lastItem = null;
+        $i = 0;
+        $wrap = function (CacheItem $item = null) use ($key, $callback, &$wrap, &$i, &$lastItem) {
+            $adapter = $this->adapters[$i];
+            if (isset($this->adapters[++$i])) {
+                $callback = $wrap;
+            }
+            if ($adapter instanceof CacheInterface) {
+                $value = $adapter->get($key, $callback);
+            } else {
+                $value = $this->doGet($adapter, $key, $callback);
+            }
+            if (null !== $item) {
+                ($this->syncItem)($lastItem = $lastItem ?? $item, $item);
+            }
+
+            return $value;
+        };
+
+        return $wrap();
+    }
+
     /**
      * {@inheritdoc}
      */
diff --git a/src/Symfony/Component/Cache/Adapter/NullAdapter.php b/src/Symfony/Component/Cache/Adapter/NullAdapter.php
index f58f81e5b8960..44929f9e76aeb 100644
--- a/src/Symfony/Component/Cache/Adapter/NullAdapter.php
+++ b/src/Symfony/Component/Cache/Adapter/NullAdapter.php
@@ -12,13 +12,17 @@
 namespace Symfony\Component\Cache\Adapter;
 
 use Psr\Cache\CacheItemInterface;
+use Symfony\Component\Cache\CacheInterface;
 use Symfony\Component\Cache\CacheItem;
+use Symfony\Component\Cache\Traits\GetTrait;
 
 /**
  * @author Titouan Galopin <galopintitouan@gmail.com>
  */
-class NullAdapter implements AdapterInterface
+class NullAdapter implements AdapterInterface, CacheInterface
 {
+    use GetTrait;
+
     private $createCacheItem;
 
     public function __construct()
diff --git a/src/Symfony/Component/Cache/Adapter/PhpArrayAdapter.php b/src/Symfony/Component/Cache/Adapter/PhpArrayAdapter.php
index ca5ef743d2285..bcd322fede1ba 100644
--- a/src/Symfony/Component/Cache/Adapter/PhpArrayAdapter.php
+++ b/src/Symfony/Component/Cache/Adapter/PhpArrayAdapter.php
@@ -13,10 +13,12 @@
 
 use Psr\Cache\CacheItemInterface;
 use Psr\Cache\CacheItemPoolInterface;
+use Symfony\Component\Cache\CacheInterface;
 use Symfony\Component\Cache\CacheItem;
 use Symfony\Component\Cache\Exception\InvalidArgumentException;
 use Symfony\Component\Cache\PruneableInterface;
 use Symfony\Component\Cache\ResettableInterface;
+use Symfony\Component\Cache\Traits\GetTrait;
 use Symfony\Component\Cache\Traits\PhpArrayTrait;
 
 /**
@@ -26,9 +28,10 @@
  * @author Titouan Galopin <galopintitouan@gmail.com>
  * @author Nicolas Grekas <p@tchwork.com>
  */
-class PhpArrayAdapter implements AdapterInterface, PruneableInterface, ResettableInterface
+class PhpArrayAdapter implements AdapterInterface, CacheInterface, PruneableInterface, ResettableInterface
 {
     use PhpArrayTrait;
+    use GetTrait;
 
     private $createCacheItem;
 
@@ -77,6 +80,31 @@ public static function create($file, CacheItemPoolInterface $fallbackPool)
         return $fallbackPool;
     }
 
+    /**
+     * {@inheritdoc}
+     */
+    public function get(string $key, callable $callback)
+    {
+        if (null === $this->values) {
+            $this->initialize();
+        }
+        if (null === $value = $this->values[$key] ?? null) {
+            if ($this->pool instanceof CacheInterface) {
+                return $this->pool->get($key, $callback);
+            }
+
+            return $this->doGet($this->pool, $key, $callback);
+        }
+        if ('N;' === $value) {
+            return null;
+        }
+        if (\is_string($value) && isset($value[2]) && ':' === $value[1]) {
+            return unserialize($value);
+        }
+
+        return $value;
+    }
+
     /**
      * {@inheritdoc}
      */
diff --git a/src/Symfony/Component/Cache/Adapter/ProxyAdapter.php b/src/Symfony/Component/Cache/Adapter/ProxyAdapter.php
index da286dbf173f7..b9981f5e64c0c 100644
--- a/src/Symfony/Component/Cache/Adapter/ProxyAdapter.php
+++ b/src/Symfony/Component/Cache/Adapter/ProxyAdapter.php
@@ -13,17 +13,20 @@
 
 use Psr\Cache\CacheItemInterface;
 use Psr\Cache\CacheItemPoolInterface;
+use Symfony\Component\Cache\CacheInterface;
 use Symfony\Component\Cache\CacheItem;
 use Symfony\Component\Cache\PruneableInterface;
 use Symfony\Component\Cache\ResettableInterface;
+use Symfony\Component\Cache\Traits\GetTrait;
 use Symfony\Component\Cache\Traits\ProxyTrait;
 
 /**
  * @author Nicolas Grekas <p@tchwork.com>
  */
-class ProxyAdapter implements AdapterInterface, PruneableInterface, ResettableInterface
+class ProxyAdapter implements AdapterInterface, CacheInterface, PruneableInterface, ResettableInterface
 {
     use ProxyTrait;
+    use GetTrait;
 
     private $namespace;
     private $namespaceLen;
@@ -54,6 +57,20 @@ function ($key, $innerItem) use ($defaultLifetime, $poolHash) {
         );
     }
 
+    /**
+     * {@inheritdoc}
+     */
+    public function get(string $key, callable $callback)
+    {
+        if (!$this->pool instanceof CacheInterface) {
+            return $this->doGet($this->pool, $key, $callback);
+        }
+
+        return $this->pool->get($this->getId($key), function ($innerItem) use ($key, $callback) {
+            return $callback(($this->createCacheItem)($key, $innerItem));
+        });
+    }
+
     /**
      * {@inheritdoc}
      */
diff --git a/src/Symfony/Component/Cache/Adapter/TagAwareAdapter.php b/src/Symfony/Component/Cache/Adapter/TagAwareAdapter.php
index 62f815e0171ad..257e404e1c43e 100644
--- a/src/Symfony/Component/Cache/Adapter/TagAwareAdapter.php
+++ b/src/Symfony/Component/Cache/Adapter/TagAwareAdapter.php
@@ -16,16 +16,19 @@
 use Symfony\Component\Cache\CacheItem;
 use Symfony\Component\Cache\PruneableInterface;
 use Symfony\Component\Cache\ResettableInterface;
+use Symfony\Component\Cache\TaggableCacheInterface;
+use Symfony\Component\Cache\Traits\GetTrait;
 use Symfony\Component\Cache\Traits\ProxyTrait;
 
 /**
  * @author Nicolas Grekas <p@tchwork.com>
  */
-class TagAwareAdapter implements TagAwareAdapterInterface, PruneableInterface, ResettableInterface
+class TagAwareAdapter implements TagAwareAdapterInterface, TaggableCacheInterface, PruneableInterface, ResettableInterface
 {
     const TAGS_PREFIX = "\0tags\0";
 
     use ProxyTrait;
+    use GetTrait;
 
     private $deferred = array();
     private $createCacheItem;
@@ -58,6 +61,7 @@ function ($key, $value, CacheItem $protoItem) {
         );
         $this->setCacheItemTags = \Closure::bind(
             function (CacheItem $item, $key, array &$itemTags) {
+                $item->isTaggable = true;
                 if (!$item->isHit) {
                     return $item;
                 }
diff --git a/src/Symfony/Component/Cache/Adapter/TraceableAdapter.php b/src/Symfony/Component/Cache/Adapter/TraceableAdapter.php
index 98d0e526933b9..a0df682d92b69 100644
--- a/src/Symfony/Component/Cache/Adapter/TraceableAdapter.php
+++ b/src/Symfony/Component/Cache/Adapter/TraceableAdapter.php
@@ -12,6 +12,8 @@
 namespace Symfony\Component\Cache\Adapter;
 
 use Psr\Cache\CacheItemInterface;
+use Symfony\Component\Cache\CacheInterface;
+use Symfony\Component\Cache\CacheItem;
 use Symfony\Component\Cache\PruneableInterface;
 use Symfony\Component\Cache\ResettableInterface;
 
@@ -22,7 +24,7 @@
  * @author Tobias Nyholm <tobias.nyholm@gmail.com>
  * @author Nicolas Grekas <p@tchwork.com>
  */
-class TraceableAdapter implements AdapterInterface, PruneableInterface, ResettableInterface
+class TraceableAdapter implements AdapterInterface, CacheInterface, PruneableInterface, ResettableInterface
 {
     protected $pool;
     private $calls = array();
@@ -32,6 +34,38 @@ public function __construct(AdapterInterface $pool)
         $this->pool = $pool;
     }
 
+    /**
+     * {@inheritdoc}
+     */
+    public function get(string $key, callable $callback)
+    {
+        if (!$this->pool instanceof CacheInterface) {
+            throw new \BadMethodCallException(sprintf('Cannot call "%s::get()": this class doesn\'t implement "%s".', get_class($this->pool), CacheInterface::class));
+        }
+
+        $isHit = true;
+        $callback = function (CacheItem $item) use ($callback, &$isHit) {
+            $isHit = $item->isHit();
+
+            return $callback($item);
+        };
+
+        $event = $this->start(__FUNCTION__);
+        try {
+            $value = $this->pool->get($key, $callback);
+            $event->result[$key] = \is_object($value) ? \get_class($value) : gettype($value);
+        } finally {
+            $event->end = microtime(true);
+        }
+        if ($isHit) {
+            ++$event->hits;
+        } else {
+            ++$event->misses;
+        }
+
+        return $value;
+    }
+
     /**
      * {@inheritdoc}
      */
diff --git a/src/Symfony/Component/Cache/Adapter/TraceableTagAwareAdapter.php b/src/Symfony/Component/Cache/Adapter/TraceableTagAwareAdapter.php
index de68955d8e56d..2fda8b360240e 100644
--- a/src/Symfony/Component/Cache/Adapter/TraceableTagAwareAdapter.php
+++ b/src/Symfony/Component/Cache/Adapter/TraceableTagAwareAdapter.php
@@ -11,10 +11,12 @@
 
 namespace Symfony\Component\Cache\Adapter;
 
+use Symfony\Component\Cache\TaggableCacheInterface;
+
 /**
  * @author Robin Chalas <robin.chalas@gmail.com>
  */
-class TraceableTagAwareAdapter extends TraceableAdapter implements TagAwareAdapterInterface
+class TraceableTagAwareAdapter extends TraceableAdapter implements TaggableCacheInterface, TagAwareAdapterInterface
 {
     public function __construct(TagAwareAdapterInterface $pool)
     {
diff --git a/src/Symfony/Component/Cache/CHANGELOG.md b/src/Symfony/Component/Cache/CHANGELOG.md
index 11c1b9364ebd5..d21b2cbda4df1 100644
--- a/src/Symfony/Component/Cache/CHANGELOG.md
+++ b/src/Symfony/Component/Cache/CHANGELOG.md
@@ -1,6 +1,12 @@
 CHANGELOG
 =========
 
+4.2.0
+-----
+
+ * added `CacheInterface` and `TaggableCacheInterface`
+ * throw `LogicException` when `CacheItem::tag()` is called on an item coming from a non tag-aware pool
+
 3.4.0
 -----
 
diff --git a/src/Symfony/Component/Cache/CacheInterface.php b/src/Symfony/Component/Cache/CacheInterface.php
new file mode 100644
index 0000000000000..c5c877ddbd746
--- /dev/null
+++ b/src/Symfony/Component/Cache/CacheInterface.php
@@ -0,0 +1,37 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\Cache;
+
+use Psr\Cache\CacheItemInterface;
+
+/**
+ * Gets and stores items from a cache.
+ *
+ * On cache misses, a callback is called that should return the missing value.
+ * It is given two arguments:
+ * - the missing cache key
+ * - the corresponding PSR-6 CacheItemInterface object,
+ *   allowing time-based expiration control.
+ *
+ * If you need tag-based invalidation, use TaggableCacheInterface instead.
+ *
+ * @author Nicolas Grekas <p@tchwork.com>
+ */
+interface CacheInterface
+{
+    /**
+     * @param callable(CacheItemInterface):mixed $callback Should return the computed value for the given key/item
+     *
+     * @return mixed The value corresponding to the provided key
+     */
+    public function get(string $key, callable $callback);
+}
diff --git a/src/Symfony/Component/Cache/CacheItem.php b/src/Symfony/Component/Cache/CacheItem.php
index cecaa126d9129..82ad9df68262c 100644
--- a/src/Symfony/Component/Cache/CacheItem.php
+++ b/src/Symfony/Component/Cache/CacheItem.php
@@ -14,6 +14,7 @@
 use Psr\Cache\CacheItemInterface;
 use Psr\Log\LoggerInterface;
 use Symfony\Component\Cache\Exception\InvalidArgumentException;
+use Symfony\Component\Cache\Exception\LogicException;
 
 /**
  * @author Nicolas Grekas <p@tchwork.com>
@@ -29,6 +30,7 @@ final class CacheItem implements CacheItemInterface
     protected $prevTags = array();
     protected $innerItem;
     protected $poolHash;
+    protected $isTaggable = false;
 
     /**
      * {@inheritdoc}
@@ -109,7 +111,10 @@ public function expiresAfter($time)
      */
     public function tag($tags)
     {
-        if (!\is_array($tags)) {
+        if (!$this->isTaggable) {
+            throw new LogicException(sprintf('Cache item "%s" comes from a non tag-aware pool: you cannot tag it.', $this->key));
+        }
+        if (!\is_iterable($tags)) {
             $tags = array($tags);
         }
         foreach ($tags as $tag) {
diff --git a/src/Symfony/Component/Cache/DataCollector/CacheDataCollector.php b/src/Symfony/Component/Cache/DataCollector/CacheDataCollector.php
index 91763e5a9f33b..5f29bfe5f2769 100644
--- a/src/Symfony/Component/Cache/DataCollector/CacheDataCollector.php
+++ b/src/Symfony/Component/Cache/DataCollector/CacheDataCollector.php
@@ -121,7 +121,15 @@ private function calculateStatistics(): array
             foreach ($calls as $call) {
                 ++$statistics[$name]['calls'];
                 $statistics[$name]['time'] += $call->end - $call->start;
-                if ('getItem' === $call->name) {
+                if ('get' === $call->name) {
+                    ++$statistics[$name]['reads'];
+                    if ($call->hits) {
+                        ++$statistics[$name]['hits'];
+                    } else {
+                        ++$statistics[$name]['misses'];
+                        ++$statistics[$name]['writes'];
+                    }
+                } elseif ('getItem' === $call->name) {
                     ++$statistics[$name]['reads'];
                     if ($call->hits) {
                         ++$statistics[$name]['hits'];
diff --git a/src/Symfony/Component/Cache/Exception/LogicException.php b/src/Symfony/Component/Cache/Exception/LogicException.php
new file mode 100644
index 0000000000000..042f73e6a5040
--- /dev/null
+++ b/src/Symfony/Component/Cache/Exception/LogicException.php
@@ -0,0 +1,19 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\Cache\Exception;
+
+use Psr\Cache\InvalidArgumentException as Psr6CacheInterface;
+use Psr\SimpleCache\InvalidArgumentException as SimpleCacheInterface;
+
+class LogicException extends \LogicException implements Psr6CacheInterface, SimpleCacheInterface
+{
+}
diff --git a/src/Symfony/Component/Cache/TaggableCacheInterface.php b/src/Symfony/Component/Cache/TaggableCacheInterface.php
new file mode 100644
index 0000000000000..c112e72586d74
--- /dev/null
+++ b/src/Symfony/Component/Cache/TaggableCacheInterface.php
@@ -0,0 +1,35 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\Cache;
+
+/**
+ * Gets and stores items from a tag-aware cache.
+ *
+ * On cache misses, a callback is called that should return the missing value.
+ * It is given two arguments:
+ * - the missing cache key
+ * - the corresponding Symfony CacheItem object,
+ *   allowing time-based *and* tags-based expiration control
+ *
+ * If you don't need tags-based invalidation, use CacheInterface instead.
+ *
+ * @author Nicolas Grekas <p@tchwork.com>
+ */
+interface TaggableCacheInterface extends CacheInterface
+{
+    /**
+     * @param callable(CacheItem):mixed $callback Should return the computed value for the given key/item
+     *
+     * @return mixed The value corresponding to the provided key
+     */
+    public function get(string $key, callable $callback);
+}
diff --git a/src/Symfony/Component/Cache/Tests/Adapter/AdapterTestCase.php b/src/Symfony/Component/Cache/Tests/Adapter/AdapterTestCase.php
index 018d149467482..3c96b731cc565 100644
--- a/src/Symfony/Component/Cache/Tests/Adapter/AdapterTestCase.php
+++ b/src/Symfony/Component/Cache/Tests/Adapter/AdapterTestCase.php
@@ -13,6 +13,7 @@
 
 use Cache\IntegrationTests\CachePoolTest;
 use Psr\Cache\CacheItemPoolInterface;
+use Symfony\Component\Cache\CacheItem;
 use Symfony\Component\Cache\PruneableInterface;
 
 abstract class AdapterTestCase extends CachePoolTest
@@ -26,6 +27,26 @@ protected function setUp()
         }
     }
 
+    public function testGet()
+    {
+        if (isset($this->skippedTests[__FUNCTION__])) {
+            $this->markTestSkipped($this->skippedTests[__FUNCTION__]);
+        }
+
+        $cache = $this->createCachePool();
+
+        $value = mt_rand();
+
+        $this->assertSame($value, $cache->get('foo', function (CacheItem $item) use ($value) {
+            $this->assertSame('foo', $item->getKey());
+
+            return $value;
+        }));
+
+        $item = $cache->getItem('foo');
+        $this->assertSame($value, $item->get());
+    }
+
     public function testDefaultLifeTime()
     {
         if (isset($this->skippedTests[__FUNCTION__])) {
diff --git a/src/Symfony/Component/Cache/Tests/Adapter/PhpArrayAdapterTest.php b/src/Symfony/Component/Cache/Tests/Adapter/PhpArrayAdapterTest.php
index 14b61263c5892..8630b52cf30c9 100644
--- a/src/Symfony/Component/Cache/Tests/Adapter/PhpArrayAdapterTest.php
+++ b/src/Symfony/Component/Cache/Tests/Adapter/PhpArrayAdapterTest.php
@@ -21,6 +21,7 @@
 class PhpArrayAdapterTest extends AdapterTestCase
 {
     protected $skippedTests = array(
+        'testGet' => 'PhpArrayAdapter is read-only.',
         'testBasicUsage' => 'PhpArrayAdapter is read-only.',
         'testBasicUsageWithLongKey' => 'PhpArrayAdapter is read-only.',
         'testClear' => 'PhpArrayAdapter is read-only.',
diff --git a/src/Symfony/Component/Cache/Tests/CacheItemTest.php b/src/Symfony/Component/Cache/Tests/CacheItemTest.php
index daca925fd5b78..3a0ea098ad7c1 100644
--- a/src/Symfony/Component/Cache/Tests/CacheItemTest.php
+++ b/src/Symfony/Component/Cache/Tests/CacheItemTest.php
@@ -55,6 +55,9 @@ public function provideInvalidKey()
     public function testTag()
     {
         $item = new CacheItem();
+        $r = new \ReflectionProperty($item, 'isTaggable');
+        $r->setAccessible(true);
+        $r->setValue($item, true);
 
         $this->assertSame($item, $item->tag('foo'));
         $this->assertSame($item, $item->tag(array('bar', 'baz')));
@@ -72,6 +75,24 @@ public function testTag()
     public function testInvalidTag($tag)
     {
         $item = new CacheItem();
+        $r = new \ReflectionProperty($item, 'isTaggable');
+        $r->setAccessible(true);
+        $r->setValue($item, true);
+
         $item->tag($tag);
     }
+
+    /**
+     * @expectedException \Symfony\Component\Cache\Exception\LogicException
+     * @expectedExceptionMessage Cache item "foo" comes from a non tag-aware pool: you cannot tag it.
+     */
+    public function testNonTaggableItem()
+    {
+        $item = new CacheItem();
+        $r = new \ReflectionProperty($item, 'key');
+        $r->setAccessible(true);
+        $r->setValue($item, 'foo');
+
+        $item->tag(array());
+    }
 }
diff --git a/src/Symfony/Component/Cache/Traits/GetTrait.php b/src/Symfony/Component/Cache/Traits/GetTrait.php
new file mode 100644
index 0000000000000..d2a5f92da2e53
--- /dev/null
+++ b/src/Symfony/Component/Cache/Traits/GetTrait.php
@@ -0,0 +1,43 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\Cache\Traits;
+
+use Psr\Cache\CacheItemPoolInterface;
+
+/**
+ * @author Nicolas Grekas <p@tchwork.com>
+ *
+ * @internal
+ */
+trait GetTrait
+{
+    /**
+     * {@inheritdoc}
+     */
+    public function get(string $key, callable $callback)
+    {
+        return $this->doGet($this, $key, $callback);
+    }
+
+    private function doGet(CacheItemPoolInterface $pool, string $key, callable $callback)
+    {
+        $item = $pool->getItem($key);
+
+        if ($item->isHit()) {
+            return $item->get();
+        }
+
+        $pool->save($item->set($value = $callback($item)));
+
+        return $value;
+    }
+}