diff --git a/doc/components/cache/memory.md b/doc/components/cache/memory.md
new file mode 100644
index 0000000000..f6d9be7920
--- /dev/null
+++ b/doc/components/cache/memory.md
@@ -0,0 +1,25 @@
+# 内存缓存
+
+[toc]
+
+缓存数据储存在全局存储对象里。
+
+## 配置
+
+```php
+<?php
+return [
+    'caches'    =>    [
+        // 缓存名称
+        'alias1'    =>    [
+            // 缓存驱动类
+            'handlerClass'    =>    \Imi\Cache\Handler\Memory::class,
+            // 驱动实例配置，暂无任何配置
+            'option'        =>    [
+            ],
+        ],
+    ],
+];
+```
+
+> 本驱动不支持也没有必要支持序列化
diff --git a/doc/components/cache/requestContext.md b/doc/components/cache/requestContext.md
index d97be54ace..7166c44757 100644
--- a/doc/components/cache/requestContext.md
+++ b/doc/components/cache/requestContext.md
@@ -2,6 +2,8 @@
 
 [toc]
 
+缓存数据存储在请求上下文里。
+
 ## 配置
 
 ```php
diff --git a/src/Cache/Handler/Base.php b/src/Cache/Handler/Base.php
index a0023da189..dcdc9728bd 100644
--- a/src/Cache/Handler/Base.php
+++ b/src/Cache/Handler/Base.php
@@ -72,18 +72,18 @@ protected function decode(string $data)
 
     /**
      * 检查key格式.
+     *
+     * @deprecated 3.0
      */
     protected function checkKey(string $key): void
     {
-        if (!\is_string($key))
-        {
-            throw new InvalidArgumentException('Key must be a string');
-        }
     }
 
     /**
      * 检查值是否是数组或Traversable.
      *
+     * @deprecated 3.0
+     *
      * @param mixed $values
      */
     protected function checkArrayOrTraversable($values): void
diff --git a/src/Cache/Handler/Memory.php b/src/Cache/Handler/Memory.php
new file mode 100644
index 0000000000..15d35e4f29
--- /dev/null
+++ b/src/Cache/Handler/Memory.php
@@ -0,0 +1,128 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Imi\Cache\Handler;
+
+use Imi\Bean\Annotation\Bean;
+use Imi\Util\DateTime;
+use Imi\Util\ExpiredStorage;
+
+/**
+ * @Bean("MemoryCache")
+ */
+class Memory extends Base
+{
+    protected static ?ExpiredStorage $storage = null;
+
+    public function __construct(array $option = [])
+    {
+        if (null === self::$storage)
+        {
+            self::$storage = new ExpiredStorage();
+        }
+        parent::__construct($option);
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function get($key, $default = null)
+    {
+        return self::$storage->get($key, $default);
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function set($key, $value, $ttl = null)
+    {
+        // ttl 支持 \DateInterval 格式
+        if ($ttl instanceof \DateInterval)
+        {
+            $ttl = DateTime::getSecondsByInterval($ttl);
+        }
+        self::$storage->set($key, $value, (int) $ttl);
+
+        return true;
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function delete($key)
+    {
+        self::$storage->unset($key);
+
+        return true;
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function clear()
+    {
+        self::$storage->clear();
+
+        return true;
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function getMultiple($keys, $default = null)
+    {
+        $this->checkArrayOrTraversable($keys);
+        $object = self::$storage;
+        $result = [];
+        foreach ($keys as $key)
+        {
+            $result[$key] = $object->get($key, $default);
+        }
+
+        return $result;
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function setMultiple($values, $ttl = null)
+    {
+        $this->checkArrayOrTraversable($values);
+        // ttl 支持 \DateInterval 格式
+        if ($ttl instanceof \DateInterval)
+        {
+            $ttl = DateTime::getSecondsByInterval($ttl);
+        }
+        $object = self::$storage;
+        foreach ($values as $key => $value)
+        {
+            $object->set($key, $value, $ttl ?? 0);
+        }
+
+        return true;
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function deleteMultiple($keys)
+    {
+        $this->checkArrayOrTraversable($keys);
+        $object = self::$storage;
+        foreach ($keys as $key)
+        {
+            $object->unset($key);
+        }
+
+        return true;
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function has($key)
+    {
+        return self::$storage->isset($key);
+    }
+}
diff --git a/tests/unit/Component/Tests/CacheMemoryTest.php b/tests/unit/Component/Tests/CacheMemoryTest.php
new file mode 100644
index 0000000000..41b595a41a
--- /dev/null
+++ b/tests/unit/Component/Tests/CacheMemoryTest.php
@@ -0,0 +1,10 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Imi\Test\Component\Tests;
+
+class CacheMemoryTest extends BaseCacheTest
+{
+    protected string $cacheName = 'memory';
+}
diff --git a/tests/unit/Component/config/config.php b/tests/unit/Component/config/config.php
index 8c1c1054d5..8585de9be9 100644
--- a/tests/unit/Component/config/config.php
+++ b/tests/unit/Component/config/config.php
@@ -319,6 +319,11 @@
             'option'        => [
             ],
         ],
+        'memory'         => [
+            'handlerClass'  => \Imi\Cache\Handler\Memory::class,
+            'option'        => [
+            ],
+        ],
     ],
     // atmoic 配置
     'atomics'           => [