diff --git a/composer.json b/composer.json
index ee0766a..4cc1743 100644
--- a/composer.json
+++ b/composer.json
@@ -69,6 +69,7 @@
 		"yiisoft/yii2-debug": "self.version",
 		"yiisoft/yii2-gii": "self.version",
 		"yiisoft/yii2-jui": "self.version",
+		"yiisoft/yii2-redis": "self.version",
 		"yiisoft/yii2-smarty": "self.version",
 		"yiisoft/yii2-swiftmailer": "self.version",
 		"yiisoft/yii2-sphinx": "self.version",
@@ -95,6 +96,7 @@
 			"yii\\debug\\": "extensions/debug/",
 			"yii\\gii\\": "extensions/gii/",
 			"yii\\jui\\": "extensions/jui/",
+			"yii\\redis\\": "extensions/redis/",
 			"yii\\smarty\\": "extensions/smarty/",
 			"yii\\swiftmailer\\": "extensions/swiftmailer/",
 			"yii\\sphinx\\": "extensions/sphinx/",
diff --git a/framework/yii/redis/ActiveQuery.php b/extensions/redis/ActiveQuery.php
similarity index 100%
rename from framework/yii/redis/ActiveQuery.php
rename to extensions/redis/ActiveQuery.php
diff --git a/framework/yii/redis/ActiveRecord.php b/extensions/redis/ActiveRecord.php
similarity index 100%
rename from framework/yii/redis/ActiveRecord.php
rename to extensions/redis/ActiveRecord.php
diff --git a/framework/yii/redis/ActiveRelation.php b/extensions/redis/ActiveRelation.php
similarity index 100%
rename from framework/yii/redis/ActiveRelation.php
rename to extensions/redis/ActiveRelation.php
diff --git a/extensions/redis/Cache.php b/extensions/redis/Cache.php
new file mode 100644
index 0000000..f1a21ed
--- /dev/null
+++ b/extensions/redis/Cache.php
@@ -0,0 +1,184 @@
+<?php
+/**
+ * @link http://www.yiiframework.com/
+ * @copyright Copyright (c) 2008 Yii Software LLC
+ * @license http://www.yiiframework.com/license/
+ */
+
+namespace yii\redis;
+
+/**
+ * Redis Cache implements a cache application component based on [redis](http://redis.io/) key-value store.
+ *
+ * Redis Cache requires redis version 2.6.12 or higher to work properly.
+ *
+ * It needs to be configured with a redis [[Connection]] that is also configured as an application component.
+ * By default it will use the `redis` application component.
+ *
+ * See [[Cache]] manual for common cache operations that redis Cache supports.
+ *
+ * Unlike the [[Cache]], redis Cache allows the expire parameter of [[set]], [[add]], [[mset]] and [[madd]] to
+ * be a floating point number, so you may specify the time in milliseconds (e.g. 0.1 will be 100 milliseconds).
+ *
+ * To use redis Cache as the cache application component, configure the application as follows,
+ *
+ * ~~~
+ * [
+ *     'components' => [
+ *         'cache' => [
+ *             'class' => 'yii\redis\Cache',
+ *         ],
+ *         'redis' => [
+ *             'class' => 'yii\redis\Connection',
+ *             'hostname' => 'localhost',
+ *             'port' => 6379,
+ *             'database' => 0,
+ *         ]
+ *     ],
+ * ]
+ * ~~~
+ *
+ * @property Connection $connection The redis connection object. This property is read-only.
+ *
+ * @author Carsten Brandt <mail@cebe.cc>
+ * @since 2.0
+ */
+class Cache extends \yii\caching\Cache
+{
+	/**
+	 * @var string the id of the application component to use as the redis connection.
+	 * It should be configured as a [[yii\redis\Connection]]. Defaults to `redis`.
+	 */
+	public $connectionId = 'redis';
+
+
+	/**
+	 * Checks whether a specified key exists in the cache.
+	 * This can be faster than getting the value from the cache if the data is big.
+	 * Note that this method does not check whether the dependency associated
+	 * with the cached data, if there is any, has changed. So a call to [[get]]
+	 * may return false while exists returns true.
+	 * @param mixed $key a key identifying the cached value. This can be a simple string or
+	 * a complex data structure consisting of factors representing the key.
+	 * @return boolean true if a value exists in cache, false if the value is not in the cache or expired.
+	 */
+	public function exists($key)
+	{
+		/** @var Connection $connection */
+		$connection = \Yii::$app->getComponent($this->connectionId);
+		return (bool) $connection->executeCommand('EXISTS', [$this->buildKey($key)]);
+	}
+
+	/**
+	 * @inheritDocs
+	 */
+	protected function getValue($key)
+	{
+		/** @var Connection $connection */
+		$connection = \Yii::$app->getComponent($this->connectionId);
+		return $connection->executeCommand('GET', [$key]);
+	}
+
+	/**
+	 * @inheritDocs
+	 */
+	protected function getValues($keys)
+	{
+		/** @var Connection $connection */
+		$connection = \Yii::$app->getComponent($this->connectionId);
+		$response = $connection->executeCommand('MGET', $keys);
+		$result = [];
+		$i = 0;
+		foreach ($keys as $key) {
+			$result[$key] = $response[$i++];
+		}
+		return $result;
+	}
+
+	/**
+	 * @inheritDocs
+	 */
+	protected function setValue($key, $value, $expire)
+	{
+		/** @var Connection $connection */
+		$connection = \Yii::$app->getComponent($this->connectionId);
+		if ($expire == 0) {
+			return (bool) $connection->executeCommand('SET', [$key, $value]);
+		} else {
+			$expire = (int) ($expire * 1000);
+			return (bool) $connection->executeCommand('SET', [$key, $value, 'PX', $expire]);
+		}
+	}
+
+	/**
+	 * @inheritDocs
+	 */
+	protected function setValues($data, $expire)
+	{
+		/** @var Connection $connection */
+		$connection = \Yii::$app->getComponent($this->connectionId);
+
+		$args = [];
+		foreach($data as $key => $value) {
+			$args[] = $key;
+			$args[] = $value;
+		}
+
+		$failedKeys = [];
+		if ($expire == 0) {
+			$connection->executeCommand('MSET', $args);
+		} else {
+			$expire = (int) ($expire * 1000);
+			$connection->executeCommand('MULTI');
+			$connection->executeCommand('MSET', $args);
+			$index = [];
+			foreach ($data as $key => $value) {
+				$connection->executeCommand('PEXPIRE', [$key, $expire]);
+				$index[] = $key;
+			}
+			$result = $connection->executeCommand('EXEC');
+			array_shift($result);
+			foreach($result as $i => $r) {
+				if ($r != 1) {
+					$failedKeys[] = $index[$i];
+				}
+			}
+		}
+		return $failedKeys;
+	}
+
+	/**
+	 * @inheritDocs
+	 */
+	protected function addValue($key, $value, $expire)
+	{
+		/** @var Connection $connection */
+		$connection = \Yii::$app->getComponent($this->connectionId);
+		if ($expire == 0) {
+			return (bool) $connection->executeCommand('SET', [$key, $value, 'NX']);
+		} else {
+			$expire = (int) ($expire * 1000);
+			return (bool) $connection->executeCommand('SET', [$key, $value, 'PX', $expire, 'NX']);
+		}
+	}
+
+	/**
+	 * @inheritDocs
+	 */
+	protected function deleteValue($key)
+	{
+		/** @var Connection $connection */
+		$connection = \Yii::$app->getComponent($this->connectionId);
+		return (bool) $connection->executeCommand('DEL', [$key]);
+	}
+
+	/**
+	 * @inheritDocs
+	 */
+	protected function flushValues()
+	{
+		/** @var Connection $connection */
+		$connection = \Yii::$app->getComponent($this->connectionId);
+		return $connection->executeCommand('FLUSHDB');
+	}
+}
diff --git a/framework/yii/redis/Connection.php b/extensions/redis/Connection.php
similarity index 88%
rename from framework/yii/redis/Connection.php
rename to extensions/redis/Connection.php
index 371b8bc..cea559f 100644
--- a/framework/yii/redis/Connection.php
+++ b/extensions/redis/Connection.php
@@ -13,6 +13,15 @@ use yii\db\Exception;
 use yii\helpers\Inflector;
 
 /**
+ * The redis connection class is used to establish a connection to a [redis](http://redis.io/) server.
+ *
+ * By default it assumes there is a redis server running on localhost at port 6379 and uses the database number 0.
+ *
+ * It also supports [the AUTH command](http://redis.io/commands/auth) of redis.
+ * When the server needs authentication, you can set the [[password]] property to
+ * authenticate with the server after connect.
+ *
+ * The ecexution of [redis commands](http://redis.io/commands) is possible with via [[executeCommand()]].
  *
  * @method mixed set($key, $value) Set the string value of a key
  * @method mixed get($key) Set the string value of a key
@@ -33,20 +42,23 @@ class Connection extends Component
 	const EVENT_AFTER_OPEN = 'afterOpen';
 
 	/**
-	 * @var string the Data Source Name, or DSN, contains the information required to connect to the database.
-	 * DSN format: redis://server:port[/db]
-	 * Where db is a zero based integer which refers to the DB to use.
-	 * If no DB is given, ID 0 is used.
-	 *
-	 * Example: redis://localhost:6379/2
+	 * @var string the hostname or ip address to use for connecting to the redis server. Defaults to 'localhost'.
 	 */
-	public $dsn;
+	public $hostname = 'localhost';
+	/**
+	 * @var int the port to use for connecting to the redis server. Default port is 6379.
+	 */
+	public $port = 6379;
 	/**
 	 * @var string the password for establishing DB connection. Defaults to null meaning no AUTH command is send.
 	 * See http://redis.io/commands/auth
 	 */
 	public $password;
 	/**
+	 * @var int the redis database to use. This is an integer value starting from 0. Defaults to 0.
+	 */
+	public $database = 0;
+	/**
 	 * @var float timeout to use for connection to redis. If not set the timeout set in php.ini will be used: ini_get("default_socket_timeout")
 	 */
 	public $connectionTimeout = null;
@@ -230,38 +242,30 @@ class Connection extends Component
 	 */
 	public function open()
 	{
-		if ($this->_socket === null) {
-			if (empty($this->dsn)) {
-				throw new InvalidConfigException('Connection.dsn cannot be empty.');
-			}
-			$dsn = explode('/', $this->dsn);
-			$host = $dsn[2];
-			if (strpos($host, ':')===false) {
-				$host .= ':6379';
+		if ($this->_socket !== null) {
+			return;
+		}
+		$connection = $this->hostname . ':' . $this->port . ', database=' . $this->database;
+		\Yii::trace('Opening redis DB connection: ' . $connection, __CLASS__);
+		$this->_socket = @stream_socket_client(
+			'tcp://' . $this->hostname . ':' . $this->port,
+			$errorNumber,
+			$errorDescription,
+			$this->connectionTimeout ? $this->connectionTimeout : ini_get("default_socket_timeout")
+		);
+		if ($this->_socket) {
+			if ($this->dataTimeout !== null) {
+				stream_set_timeout($this->_socket, $timeout=(int)$this->dataTimeout, (int) (($this->dataTimeout - $timeout) * 1000000));
 			}
-			$db = isset($dsn[3]) ? $dsn[3] : 0;
-
-			\Yii::trace('Opening DB connection: ' . $this->dsn, __CLASS__);
-			$this->_socket = @stream_socket_client(
-				$host,
-				$errorNumber,
-				$errorDescription,
-				$this->connectionTimeout ? $this->connectionTimeout : ini_get("default_socket_timeout")
-			);
-			if ($this->_socket) {
-				if ($this->dataTimeout !== null) {
-					stream_set_timeout($this->_socket, $timeout=(int)$this->dataTimeout, (int) (($this->dataTimeout - $timeout) * 1000000));
-				}
-				if ($this->password !== null) {
-					$this->executeCommand('AUTH', [$this->password]);
-				}
-				$this->executeCommand('SELECT', [$db]);
-				$this->initConnection();
-			} else {
-				\Yii::error("Failed to open DB connection ({$this->dsn}): " . $errorNumber . ' - ' . $errorDescription, __CLASS__);
-				$message = YII_DEBUG ? 'Failed to open DB connection: ' . $errorNumber . ' - ' . $errorDescription : 'Failed to open DB connection.';
-				throw new Exception($message, $errorDescription, (int)$errorNumber);
+			if ($this->password !== null) {
+				$this->executeCommand('AUTH', [$this->password]);
 			}
+			$this->executeCommand('SELECT', [$this->database]);
+			$this->initConnection();
+		} else {
+			\Yii::error("Failed to open DB connection ($connection): " . $errorNumber . ' - ' . $errorDescription, __CLASS__);
+			$message = YII_DEBUG ? 'Failed to open DB connection: ' . $errorNumber . ' - ' . $errorDescription : 'Failed to open DB connection.';
+			throw new Exception($message, $errorDescription, (int)$errorNumber);
 		}
 	}
 
@@ -272,7 +276,8 @@ class Connection extends Component
 	public function close()
 	{
 		if ($this->_socket !== null) {
-			\Yii::trace('Closing DB connection: ' . $this->dsn, __CLASS__);
+			$connection = $this->hostname . ':' . $this->port . ', database=' . $this->database;
+			\Yii::trace('Closing DB connection: ' . $connection, __CLASS__);
 			$this->executeCommand('QUIT');
 			stream_socket_shutdown($this->_socket, STREAM_SHUT_RDWR);
 			$this->_socket = null;
@@ -295,11 +300,7 @@ class Connection extends Component
 	 */
 	public function getDriverName()
 	{
-		if (($pos = strpos($this->dsn, ':')) !== false) {
-			return strtolower(substr($this->dsn, 0, $pos));
-		} else {
-			return 'redis';
-		}
+		return 'redis';
 	}
 
 	/**
diff --git a/extensions/redis/LICENSE.md b/extensions/redis/LICENSE.md
new file mode 100644
index 0000000..e98f03d
--- /dev/null
+++ b/extensions/redis/LICENSE.md
@@ -0,0 +1,32 @@
+The Yii framework is free software. It is released under the terms of
+the following BSD License.
+
+Copyright © 2008 by Yii Software LLC (http://www.yiisoft.com)
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions
+are met:
+
+ * Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+ * Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in
+   the documentation and/or other materials provided with the
+   distribution.
+ * Neither the name of Yii Software LLC nor the names of its
+   contributors may be used to endorse or promote products derived
+   from this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+POSSIBILITY OF SUCH DAMAGE.
diff --git a/framework/yii/redis/LuaScriptBuilder.php b/extensions/redis/LuaScriptBuilder.php
similarity index 100%
rename from framework/yii/redis/LuaScriptBuilder.php
rename to extensions/redis/LuaScriptBuilder.php
diff --git a/extensions/redis/README.md b/extensions/redis/README.md
new file mode 100644
index 0000000..28cecf1
--- /dev/null
+++ b/extensions/redis/README.md
@@ -0,0 +1,91 @@
+Redis Cache and ActiveRecord for Yii 2
+======================================
+
+This extension provides the [redis](http://redis.io/) key-value store support for the Yii2 framework.
+It includes a `Cache` class and implents the `ActiveRecord` pattern that allows you to store active
+records in redis.
+
+To use this extension, you have to configure the Connection class in your application configuration:
+
+```php
+return [
+	//....
+	'components' => [
+        'redis' => [
+            'class' => 'yii\redis\Connection',
+            'hostname' => 'localhost',
+            'port' => 6379,
+            'database' => 0,
+        ],
+	]
+];
+```
+
+To use the `Cache` component, you also have to configure the `cache` component to be `yii\redis\Cache`:
+
+```php
+return [
+	//....
+	'components' => [
+	    // ...
+        'cache' => [
+            'class' => 'yii\redis\Cache',
+        ],
+	]
+];
+```
+
+
+Installation
+------------
+
+The preferred way to install this extension is through [composer](http://getcomposer.org/download/).
+
+Either run
+
+```
+php composer.phar require yiisoft/yii2-redis "*"
+```
+
+or add
+
+```json
+"yiisoft/yii2-redis": "*"
+```
+
+to the require section of your composer.json.
+
+
+Using the redis ActiveRecord
+----------------------------
+
+For general information on how to use yii's ActiveRecord please refer to the [guide](https://github.com/yiisoft/yii2/blob/master/docs/guide/active-record.md).
+
+For defining a redis ActiveRecord class your record class needs to extend from `yii\redis\ActiveRecord` and
+implement at least the `attributes()` method to define the attributes of the record.
+A primary key can be defined via [[primaryKey()]] which defaults to `id` if not specified.
+The primaryKey needs to be part of the attributes so make sure you have an `id` attribute defined if you do
+not specify your own primary key.
+
+The following is an example model called `Customer`:
+
+```php
+class Customer extends \yii\redis\ActiveRecord
+{
+    public function attributes()
+    {
+        return ['id', 'name', 'address', 'registration_date'];
+    }
+}
+```
+
+The general usage of redis ActiveRecord is very similar to the database ActiveRecord as described in the
+[guide](https://github.com/yiisoft/yii2/blob/master/docs/guide/active-record.md).
+It supports the same interface and features except the following limitations:
+
+- As redis does not support SQL the query API is limited to the following methods:
+  `where()`, `limit()`, `offset()`, `orderBy()` and `indexBy()`.
+  (orderBy() is not yet implemented: [#1305](https://github.com/yiisoft/yii2/issues/1305))
+- `via`-relations can not be defined via a table as there are not tables in redis. You can only define relations via other records.
+
+It is also possible to define relations from redis ActiveRecords to normal ActiveRecord classes and vice versa.
\ No newline at end of file
diff --git a/extensions/redis/composer.json b/extensions/redis/composer.json
new file mode 100644
index 0000000..fb5065b
--- /dev/null
+++ b/extensions/redis/composer.json
@@ -0,0 +1,27 @@
+{
+	"name": "yiisoft/yii2-redis",
+	"description": "Redis Cache and ActiveRecord for the Yii framework",
+	"keywords": ["yii", "redis", "active-record", "cache"],
+	"type": "yii2-extension",
+	"license": "BSD-3-Clause",
+	"support": {
+		"issues": "https://github.com/yiisoft/yii2/issues?labels=ext%3Aredis",
+		"forum": "http://www.yiiframework.com/forum/",
+		"wiki": "http://www.yiiframework.com/wiki/",
+		"irc": "irc://irc.freenode.net/yii",
+		"source": "https://github.com/yiisoft/yii2"
+	},
+	"authors": [
+		{
+			"name": "Carsten Brandt",
+			"email": "mail@cebe.cc"
+		}
+	],
+	"require": {
+		"yiisoft/yii2": "*"
+	},
+	"autoload": {
+		"psr-0": { "yii\\redis\\": "" }
+	},
+	"target-dir": "yii/redis"
+}
diff --git a/extensions/sphinx/composer.json b/extensions/sphinx/composer.json
index 0331667..decac2f 100644
--- a/extensions/sphinx/composer.json
+++ b/extensions/sphinx/composer.json
@@ -1,7 +1,7 @@
 {
 	"name": "yiisoft/yii2-sphinx",
 	"description": "Sphinx full text search engine extension for the Yii framework",
-	"keywords": ["yii", "sphinx", "search", "fulltext"],
+	"keywords": ["yii", "sphinx", "active-record", "search", "fulltext"],
 	"type": "yii2-extension",
 	"license": "BSD-3-Clause",
 	"support": {
diff --git a/framework/yii/caching/RedisCache.php b/framework/yii/caching/RedisCache.php
deleted file mode 100644
index b64f000..0000000
--- a/framework/yii/caching/RedisCache.php
+++ /dev/null
@@ -1,218 +0,0 @@
-<?php
-/**
- * @link http://www.yiiframework.com/
- * @copyright Copyright (c) 2008 Yii Software LLC
- * @license http://www.yiiframework.com/license/
- */
-
-namespace yii\caching;
-
-use yii\redis\Connection;
-
-/**
- * RedisCache implements a cache application component based on [redis](http://redis.io/) version 2.6.12 or higher.
- *
- * RedisCache needs to be configured with [[hostname]], [[port]] and [[database]] of the server
- * to connect to. By default RedisCache assumes there is a redis server running on localhost at
- * port 6379 and uses the database number 0.
- *
- * RedisCache also supports [the AUTH command](http://redis.io/commands/auth) of redis.
- * When the server needs authentication, you can set the [[password]] property to
- * authenticate with the server after connect.
- *
- * See [[Cache]] manual for common cache operations that RedisCache supports.
- * Unlike the [[CCache]], RedisCache allows the expire parameter of
- * [[set]] and [[add]] to be a floating point number, so you may specify the time in milliseconds.
- *
- * To use RedisCache as the cache application component, configure the application as follows,
- *
- * ~~~
- * [
- *     'components' => [
- *         'cache' => [
- *             'class' => 'RedisCache',
- *             'hostname' => 'localhost',
- *             'port' => 6379,
- *             'database' => 0,
- *         ],
- *     ],
- * ]
- * ~~~
- *
- * @property Connection $connection The redis connection object. This property is read-only.
- *
- * @author Carsten Brandt <mail@cebe.cc>
- * @since 2.0
- */
-class RedisCache extends Cache
-{
-	/**
-	 * @var string hostname to use for connecting to the redis server. Defaults to 'localhost'.
-	 */
-	public $hostname = 'localhost';
-	/**
-	 * @var int the port to use for connecting to the redis server. Default port is 6379.
-	 */
-	public $port = 6379;
-	/**
-	 * @var string the password to use to authenticate with the redis server. If not set, no AUTH command will be sent.
-	 */
-	public $password;
-	/**
-	 * @var int the redis database to use. This is an integer value starting from 0. Defaults to 0.
-	 */
-	public $database = 0;
-	/**
-	 * @var float timeout to use for connection to redis. If not set the timeout set in php.ini will be used: ini_get("default_socket_timeout")
-	 */
-	public $connectionTimeout = null;
-	/**
-	 * @var float timeout to use for redis socket when reading and writing data. If not set the php default value will be used.
-	 */
-	public $dataTimeout = null;
-	/**
-	 * @var Connection the redis connection
-	 */
-	private $_connection;
-
-
-	/**
-	 * Initializes the cache component by establishing a connection to the redis server.
-	 */
-	public function init()
-	{
-		parent::init();
-		$this->getConnection();
-	}
-
-	/**
-	 * Returns the redis connection object.
-	 * Establishes a connection to the redis server if it does not already exists.
-	 * @return Connection the redis connection object.
-	 */
-	public function getConnection()
-	{
-		if ($this->_connection === null) {
-			$this->_connection = new Connection([
-				'dsn' => 'redis://' . $this->hostname . ':' . $this->port . '/' . $this->database,
-				'password' => $this->password,
-				'connectionTimeout' => $this->connectionTimeout,
-				'dataTimeout' => $this->dataTimeout,
-			]);
-		}
-		return $this->_connection;
-	}
-
-	/**
-	 * Checks whether a specified key exists in the cache.
-	 * This can be faster than getting the value from the cache if the data is big.
-	 * Note that this method does not check whether the dependency associated
-	 * with the cached data, if there is any, has changed. So a call to [[get]]
-	 * may return false while exists returns true.
-	 * @param mixed $key a key identifying the cached value. This can be a simple string or
-	 * a complex data structure consisting of factors representing the key.
-	 * @return boolean true if a value exists in cache, false if the value is not in the cache or expired.
-	 */
-	public function exists($key)
-	{
-		return (bool) $this->_connection->executeCommand('EXISTS', [$this->buildKey($key)]);
-	}
-
-	/**
-	 * @inheritDocs
-	 */
-	protected function getValue($key)
-	{
-		return $this->_connection->executeCommand('GET', [$key]);
-	}
-
-	/**
-	 * @inheritDocs
-	 */
-	protected function getValues($keys)
-	{
-		$response = $this->_connection->executeCommand('MGET', $keys);
-		$result = [];
-		$i = 0;
-		foreach ($keys as $key) {
-			$result[$key] = $response[$i++];
-		}
-		return $result;
-	}
-
-	/**
-	 * @inheritDocs
-	 */
-	protected function setValue($key, $value, $expire)
-	{
-		if ($expire == 0) {
-			return (bool) $this->_connection->executeCommand('SET', [$key, $value]);
-		} else {
-			$expire = (int) ($expire * 1000);
-			return (bool) $this->_connection->executeCommand('SET', [$key, $value, 'PX', $expire]);
-		}
-	}
-
-	/**
-	 * @inheritDocs
-	 */
-	protected function setValues($data, $expire)
-	{
-		$args = [];
-		foreach($data as $key => $value) {
-			$args[] = $key;
-			$args[] = $value;
-		}
-
-		$failedKeys = [];
-		if ($expire == 0) {
-			$this->_connection->executeCommand('MSET', $args);
-		} else {
-			$expire = (int) ($expire * 1000);
-			$this->_connection->executeCommand('MULTI');
-			$this->_connection->executeCommand('MSET', $args);
-			$index = [];
-			foreach ($data as $key => $value) {
-				$this->_connection->executeCommand('PEXPIRE', [$key, $expire]);
-				$index[] = $key;
-			}
-			$result = $this->_connection->executeCommand('EXEC');
-			array_shift($result);
-			foreach($result as $i => $r) {
-				if ($r != 1) {
-					$failedKeys[] = $index[$i];
-				}
-			}
-		}
-		return $failedKeys;
-	}
-
-	/**
-	 * @inheritDocs
-	 */
-	protected function addValue($key, $value, $expire)
-	{
-		if ($expire == 0) {
-			return (bool) $this->_connection->executeCommand('SET', [$key, $value, 'NX']);
-		} else {
-			$expire = (int) ($expire * 1000);
-			return (bool) $this->_connection->executeCommand('SET', [$key, $value, 'PX', $expire, 'NX']);
-		}
-	}
-
-	/**
-	 * @inheritDocs
-	 */
-	protected function deleteValue($key)
-	{
-		return (bool) $this->_connection->executeCommand('DEL', [$key]);
-	}
-
-	/**
-	 * @inheritDocs
-	 */
-	protected function flushValues()
-	{
-		return $this->_connection->executeCommand('FLUSHDB');
-	}
-}
diff --git a/framework/yii/classes.php b/framework/yii/classes.php
index 9f39ee9..c8b2935 100644
--- a/framework/yii/classes.php
+++ b/framework/yii/classes.php
@@ -61,7 +61,6 @@ return [
 	'yii\caching\GroupDependency' => YII_PATH . '/caching/GroupDependency.php',
 	'yii\caching\MemCache' => YII_PATH . '/caching/MemCache.php',
 	'yii\caching\MemCacheServer' => YII_PATH . '/caching/MemCacheServer.php',
-	'yii\caching\RedisCache' => YII_PATH . '/caching/RedisCache.php',
 	'yii\caching\WinCache' => YII_PATH . '/caching/WinCache.php',
 	'yii\caching\XCache' => YII_PATH . '/caching/XCache.php',
 	'yii\caching\ZendDataCache' => YII_PATH . '/caching/ZendDataCache.php',
@@ -168,8 +167,6 @@ return [
 	'yii\rbac\Item' => YII_PATH . '/rbac/Item.php',
 	'yii\rbac\Manager' => YII_PATH . '/rbac/Manager.php',
 	'yii\rbac\PhpManager' => YII_PATH . '/rbac/PhpManager.php',
-	'yii\redis\Connection' => YII_PATH . '/redis/Connection.php',
-	'yii\redis\Transaction' => YII_PATH . '/redis/Transaction.php',
 	'yii\requirements\YiiRequirementChecker' => YII_PATH . '/requirements/YiiRequirementChecker.php',
 	'yii\test\DbFixtureManager' => YII_PATH . '/test/DbFixtureManager.php',
 	'yii\test\DbTestTrait' => YII_PATH . '/test/DbTestTrait.php',
diff --git a/tests/unit/data/config.php b/tests/unit/data/config.php
index 13a1026..28e5abe 100644
--- a/tests/unit/data/config.php
+++ b/tests/unit/data/config.php
@@ -30,7 +30,9 @@ return [
 			'fixture' => __DIR__ . '/postgres.sql',
 		],
 		'redis' => [
-			'dsn' => 'redis://localhost:6379/0',
+			'hostname' => 'localhost',
+			'port' => 6379,
+			'database' => 0,
 			'password' => null,
 		],
 	],
diff --git a/tests/unit/framework/redis/ActiveRecordTest.php b/tests/unit/extensions/redis/ActiveRecordTest.php
similarity index 99%
rename from tests/unit/framework/redis/ActiveRecordTest.php
rename to tests/unit/extensions/redis/ActiveRecordTest.php
index 31907f7..74dd49e 100644
--- a/tests/unit/framework/redis/ActiveRecordTest.php
+++ b/tests/unit/extensions/redis/ActiveRecordTest.php
@@ -1,8 +1,7 @@
 <?php
 
-namespace yiiunit\framework\redis;
+namespace yiiunit\extensions\redis;
 
-use yii\db\Query;
 use yii\redis\ActiveQuery;
 use yiiunit\data\ar\redis\ActiveRecord;
 use yiiunit\data\ar\redis\Customer;
diff --git a/tests/unit/framework/caching/RedisCacheTest.php b/tests/unit/extensions/redis/RedisCacheTest.php
similarity index 68%
rename from tests/unit/framework/caching/RedisCacheTest.php
rename to tests/unit/extensions/redis/RedisCacheTest.php
index 3201a49..a235bb5 100644
--- a/tests/unit/framework/caching/RedisCacheTest.php
+++ b/tests/unit/extensions/redis/RedisCacheTest.php
@@ -1,7 +1,12 @@
 <?php
-namespace yiiunit\framework\caching;
-use yii\caching\MemCache;
-use yii\caching\RedisCache;
+namespace yiiunit\extensions\redis;
+
+use Yii;
+use yii\redis\Cache;
+use yii\redis\Connection;
+use yiiunit\framework\caching\CacheTestCase;
+
+Yii::setAlias('@yii/redis', __DIR__ . '/../../../../extensions/redis');
 
 /**
  * Class for testing redis cache backend
@@ -13,23 +18,24 @@ class RedisCacheTest extends CacheTestCase
 	private $_cacheInstance = null;
 
 	/**
-	 * @return MemCache
+	 * @return Cache
 	 */
 	protected function getCacheInstance()
 	{
-		$config = [
-			'hostname' => 'localhost',
-			'port' => 6379,
-			'database' => 0,
-			'dataTimeout' => 0.1,
-		];
-		$dsn = $config['hostname'] . ':' .$config['port'];
-		if (!@stream_socket_client($dsn, $errorNumber, $errorDescription, 0.5)) {
-			$this->markTestSkipped('No redis server running at ' . $dsn .' : ' . $errorNumber . ' - ' . $errorDescription);
+		$databases = $this->getParam('databases');
+		$params = isset($databases['redis']) ? $databases['redis'] : null;
+		if ($params === null) {
+			$this->markTestSkipped('No redis server connection configured.');
 		}
+		$connection = new Connection($params);
+		if(!@stream_socket_client($connection->hostname . ':' . $connection->port, $errorNumber, $errorDescription, 0.5)) {
+			$this->markTestSkipped('No redis server running at ' . $connection->hostname . ':' . $connection->port . ' : ' . $errorNumber . ' - ' . $errorDescription);
+		}
+
+		$this->mockApplication(['components' => ['redis' => $connection]]);
 
 		if ($this->_cacheInstance === null) {
-			$this->_cacheInstance = new RedisCache($config);
+			$this->_cacheInstance = new Cache();
 		}
 		return $this->_cacheInstance;
 	}
diff --git a/tests/unit/framework/redis/RedisConnectionTest.php b/tests/unit/extensions/redis/RedisConnectionTest.php
similarity index 66%
rename from tests/unit/framework/redis/RedisConnectionTest.php
rename to tests/unit/extensions/redis/RedisConnectionTest.php
index af39e0e..7a6bd91 100644
--- a/tests/unit/framework/redis/RedisConnectionTest.php
+++ b/tests/unit/extensions/redis/RedisConnectionTest.php
@@ -1,6 +1,6 @@
 <?php
 
-namespace yiiunit\framework\redis;
+namespace yiiunit\extensions\redis;
 
 use yii\redis\Connection;
 
@@ -10,35 +10,24 @@ use yii\redis\Connection;
 class RedisConnectionTest extends RedisTestCase
 {
 	/**
-	 * Empty DSN should throw exception
-	 * @expectedException \yii\base\InvalidConfigException
-	 */
-	public function testEmptyDSN()
-	{
-		$db = new Connection();
-		$db->open();
-	}
-
-	/**
 	 * test connection to redis and selection of db
 	 */
 	public function testConnect()
 	{
-		$db = new Connection();
-		$db->dsn = 'redis://localhost:6379';
+		$db = $this->getConnection(false);
 		$db->open();
 		$this->assertTrue($db->ping());
 		$db->set('YIITESTKEY', 'YIITESTVALUE');
 		$db->close();
 
-		$db = new Connection();
-		$db->dsn = 'redis://localhost:6379/0';
+		$db = $this->getConnection(false);
+		$db->database = 0;
 		$db->open();
 		$this->assertEquals('YIITESTVALUE', $db->get('YIITESTKEY'));
 		$db->close();
 
-		$db = new Connection();
-		$db->dsn = 'redis://localhost:6379/1';
+		$db = $this->getConnection(false);
+		$db->database = 1;
 		$db->open();
 		$this->assertNull($db->get('YIITESTKEY'));
 		$db->close();
diff --git a/tests/unit/framework/redis/RedisTestCase.php b/tests/unit/extensions/redis/RedisTestCase.php
similarity index 50%
rename from tests/unit/framework/redis/RedisTestCase.php
rename to tests/unit/extensions/redis/RedisTestCase.php
index 12e539d..ed4dccd 100644
--- a/tests/unit/framework/redis/RedisTestCase.php
+++ b/tests/unit/extensions/redis/RedisTestCase.php
@@ -1,10 +1,13 @@
 <?php
 
-namespace yiiunit\framework\redis;
+namespace yiiunit\extensions\redis;
 
+use Yii;
 use yii\redis\Connection;
 use yiiunit\TestCase;
 
+Yii::setAlias('@yii/redis', __DIR__ . '/../../../../extensions/redis');
+
 /**
  * RedisTestCase is the base class for all redis related test cases
  */
@@ -12,22 +15,18 @@ abstract class RedisTestCase extends TestCase
 {
 	protected function setUp()
 	{
-		$this->mockApplication();
-
 		$databases = $this->getParam('databases');
 		$params = isset($databases['redis']) ? $databases['redis'] : null;
-		if ($params === null || !isset($params['dsn'])) {
+		if ($params === null) {
 			$this->markTestSkipped('No redis server connection configured.');
 		}
-		$dsn = explode('/', $params['dsn']);
-		$host = $dsn[2];
-		if (strpos($host, ':')===false) {
-			$host .= ':6379';
-		}
-		if(!@stream_socket_client($host, $errorNumber, $errorDescription, 0.5)) {
-			$this->markTestSkipped('No redis server running at ' . $params['dsn'] . ' : ' . $errorNumber . ' - ' . $errorDescription);
+		$connection = new Connection($params);
+		if(!@stream_socket_client($connection->hostname . ':' . $connection->port, $errorNumber, $errorDescription, 0.5)) {
+			$this->markTestSkipped('No redis server running at ' . $connection->hostname . ':' . $connection->port . ' : ' . $errorNumber . ' - ' . $errorDescription);
 		}
 
+		$this->mockApplication(['components' => ['redis' => $connection]]);
+
 		parent::setUp();
 	}
 
@@ -38,13 +37,11 @@ abstract class RedisTestCase extends TestCase
 	public function getConnection($reset = true)
 	{
 		$databases = $this->getParam('databases');
-		$params = isset($databases['redis']) ? $databases['redis'] : array();
-		$db = new Connection;
-		$db->dsn = $params['dsn'];
-		$db->password = $params['password'];
+		$params = isset($databases['redis']) ? $databases['redis'] : [];
+		$db = new Connection($params);
 		if ($reset) {
 			$db->open();
-			$db->flushall();
+			$db->flushdb();
 		}
 		return $db;
 	}