diff --git a/src/danog/MadelineProto/API.php b/src/danog/MadelineProto/API.php
index b9fe19c7..ef84e484 100644
--- a/src/danog/MadelineProto/API.php
+++ b/src/danog/MadelineProto/API.php
@@ -20,6 +20,7 @@
 namespace danog\MadelineProto;
 
 use Amp\Ipc\Sync\ChannelledSocket;
+use Amp\Loop;
 use danog\MadelineProto\Ipc\Client;
 use danog\MadelineProto\Ipc\Server;
 use danog\MadelineProto\Settings\Logger as SettingsLogger;
@@ -159,6 +160,7 @@ class API extends InternalDoc
         $this->APIFactory();
         $this->logger->logger(Lang::$current_lang['madelineproto_ready'], Logger::NOTICE);
     }
+
     /**
      * Reconnect to full instance.
      *
@@ -276,7 +278,7 @@ class API extends InternalDoc
                     }
                 }
             }
-            $this->methods = self::getInternalMethodList($this->API);
+            $this->methods = self::getInternalMethodList($this->API, MTProto::class);
         }
     }
 
diff --git a/src/danog/MadelineProto/APIWrapper.php b/src/danog/MadelineProto/APIWrapper.php
index 76810b91..24a21f27 100644
--- a/src/danog/MadelineProto/APIWrapper.php
+++ b/src/danog/MadelineProto/APIWrapper.php
@@ -188,7 +188,10 @@ final class APIWrapper
                 yield from $this->API->initAsynchronously();
             }
 
-            yield from $this->session->serialize($this, $this->session->getSessionPath());
+            yield from $this->session->serialize(
+                yield from $this->API->serializeSession($this),
+                $this->session->getSessionPath()
+            );
 
             if ($this->API) {
                 yield from $this->session->storeLightState($this->API);
diff --git a/src/danog/MadelineProto/AbstractAPIFactory.php b/src/danog/MadelineProto/AbstractAPIFactory.php
index 7e665009..2a8df9cc 100644
--- a/src/danog/MadelineProto/AbstractAPIFactory.php
+++ b/src/danog/MadelineProto/AbstractAPIFactory.php
@@ -200,8 +200,8 @@ abstract class AbstractAPIFactory extends AsyncConstruct
     /**
      * Get fully resolved method list for object, including snake_case and camelCase variants.
      *
-     * @param API|MTProto $value Value
-     * @param string      $class Custom class name
+     * @param API|MTProto|Client $value Value
+     * @param string             $class Custom class name
      *
      * @return array
      */
diff --git a/src/danog/MadelineProto/Db/DbPropertiesFactory.php b/src/danog/MadelineProto/Db/DbPropertiesFactory.php
index d12456d5..72815b2c 100644
--- a/src/danog/MadelineProto/Db/DbPropertiesFactory.php
+++ b/src/danog/MadelineProto/Db/DbPropertiesFactory.php
@@ -27,7 +27,10 @@ class DbPropertiesFactory
      */
     public static function get(DatabaseAbstract $dbSettings, string $namePrefix, string $propertyType, string $name, $value = null): Promise
     {
-        $class = __NAMESPACE__;
+        $propertyType = \strtolower($propertyType);
+        $class = $propertyType === 'arraynullcache' && !$dbSettings instanceof Memory
+            ? __NAMESPACE__.'\\NullCache'
+            : __NAMESPACE__ ;
 
         switch (true) {
             case $dbSettings instanceof Memory:
@@ -49,6 +52,7 @@ class DbPropertiesFactory
 
         /** @var DbType $class */
         switch (\strtolower($propertyType)) {
+            case 'arraynullcache':
             case 'array':
                 $class .= 'Array';
                 break;
diff --git a/src/danog/MadelineProto/Db/NullCache/MysqlArray.php b/src/danog/MadelineProto/Db/NullCache/MysqlArray.php
new file mode 100644
index 00000000..1fb87d8d
--- /dev/null
+++ b/src/danog/MadelineProto/Db/NullCache/MysqlArray.php
@@ -0,0 +1,10 @@
+<?php
+
+namespace danog\MadelineProto\Db\NullCache;
+
+use danog\MadelineProto\Settings\Database\Mysql;
+
+class MysqlArray extends Mysql
+{
+    use NullCacheTrait;
+}
diff --git a/src/danog/MadelineProto/Db/NullCache/NullCacheTrait.php b/src/danog/MadelineProto/Db/NullCache/NullCacheTrait.php
new file mode 100644
index 00000000..322dbc3a
--- /dev/null
+++ b/src/danog/MadelineProto/Db/NullCache/NullCacheTrait.php
@@ -0,0 +1,36 @@
+<?php
+
+namespace danog\MadelineProto\Db\NullCache;
+
+trait NullCacheTrait
+{
+    protected function getCache(string $key, $default = null)
+    {
+    }
+
+    /**
+     * Save item in cache.
+     *
+     * @param string $key
+     * @param $value
+     */
+    protected function setCache(string $key, $value): void
+    {
+    }
+
+    /**
+     * Remove key from cache.
+     *
+     * @param string $key
+     */
+    protected function unsetCache(string $key): void
+    {
+    }
+
+    protected function startCacheCleanupLoop(): void
+    {
+    }
+    protected function stopCacheCleanupLoop(): void
+    {
+    }
+}
diff --git a/src/danog/MadelineProto/Db/NullCache/PostgresArray.php b/src/danog/MadelineProto/Db/NullCache/PostgresArray.php
new file mode 100644
index 00000000..1259c735
--- /dev/null
+++ b/src/danog/MadelineProto/Db/NullCache/PostgresArray.php
@@ -0,0 +1,10 @@
+<?php
+
+namespace danog\MadelineProto\Db\NullCache;
+
+use danog\MadelineProto\Settings\Database\Postgres;
+
+class PostgresArray extends Postgres
+{
+    use NullCacheTrait;
+}
diff --git a/src/danog/MadelineProto/Db/NullCache/RedisArray.php b/src/danog/MadelineProto/Db/NullCache/RedisArray.php
new file mode 100644
index 00000000..895f9b27
--- /dev/null
+++ b/src/danog/MadelineProto/Db/NullCache/RedisArray.php
@@ -0,0 +1,10 @@
+<?php
+
+namespace danog\MadelineProto\Db\NullCache;
+
+use danog\MadelineProto\Db\RedisArray as DbRedisArray;
+
+class RedisArray extends DbRedisArray
+{
+    use NullCacheTrait;
+}
diff --git a/src/danog/MadelineProto/InternalDoc.php b/src/danog/MadelineProto/InternalDoc.php
index 8967ae9d..96592cd0 100644
--- a/src/danog/MadelineProto/InternalDoc.php
+++ b/src/danog/MadelineProto/InternalDoc.php
@@ -5404,6 +5404,15 @@ class InternalDoc extends APIFactory
     {
         return \danog\MadelineProto\Tools::isArrayOrAlike($var);
     }
+    /**
+     * Whether we're an IPC client instance.
+     *
+     * @return boolean
+     */
+    public function isIpc(): bool
+    {
+        return $this->API->isIpc();
+    }
     /**
      * Check whether provided bot API ID is a channel.
      *
diff --git a/src/danog/MadelineProto/Ipc/Client.php b/src/danog/MadelineProto/Ipc/Client.php
index 2447fffc..2e52f76b 100644
--- a/src/danog/MadelineProto/Ipc/Client.php
+++ b/src/danog/MadelineProto/Ipc/Client.php
@@ -159,6 +159,24 @@ class Client
         $this->run = false;
         return $this->server->send(Server::SHUTDOWN);
     }
+    /**
+     * Restart IPC server instance.
+     *
+     * @internal
+     */
+    public function restartIpcServer(): Promise
+    {
+        return $this->server->send(Server::SHUTDOWN);
+    }
+    /**
+     * Whether we're an IPC client instance.
+     *
+     * @return boolean
+     */
+    public function isIpc(): bool
+    {
+        return true;
+    }
     /**
      * Call function.
      *
diff --git a/src/danog/MadelineProto/Ipc/Server.php b/src/danog/MadelineProto/Ipc/Server.php
index d76c5105..4d2fee13 100644
--- a/src/danog/MadelineProto/Ipc/Server.php
+++ b/src/danog/MadelineProto/Ipc/Server.php
@@ -177,6 +177,7 @@ class Server extends SignalLoop
             $result = $this->API->{$payload[0]}(...$payload[1]);
             $result = $result instanceof \Generator ? yield from $result : yield $result;
         } catch (\Throwable $e) {
+            $this->API->logger("Got error while calling IPC method: $e", Logger::ERROR);
             $result = new ExitFailure($e);
         }
         try {
diff --git a/src/danog/MadelineProto/MTProto.php b/src/danog/MadelineProto/MTProto.php
index 2f7e266b..d9af9807 100644
--- a/src/danog/MadelineProto/MTProto.php
+++ b/src/danog/MadelineProto/MTProto.php
@@ -24,11 +24,13 @@ use Amp\File\StatCache;
 use Amp\Http\Client\HttpClient;
 use Amp\Loop;
 use Amp\Promise;
+use Amp\Success;
 use Closure;
 use danog\MadelineProto\Async\AsyncConstruct;
 use danog\MadelineProto\Db\DbArray;
 use danog\MadelineProto\Db\DbPropertiesFactory;
 use danog\MadelineProto\Db\DbPropertiesTrait;
+use danog\MadelineProto\Db\MemoryArray;
 use danog\MadelineProto\Ipc\Server;
 use danog\MadelineProto\Loop\Generic\PeriodicLoopInternal;
 use danog\MadelineProto\Loop\Update\FeedLoop;
@@ -468,6 +470,13 @@ class MTProto extends AsyncConstruct implements TLCallback
         ]
     ];
 
+    /**
+     * Nullcache array for storing main session file to DB.
+     *
+     * @var DbArray|Promise[]
+     */
+    public $session;
+
     /**
      * List of properties stored in database (memory or external).
      * @see DbPropertiesFactory
@@ -478,8 +487,23 @@ class MTProto extends AsyncConstruct implements TLCallback
         'full_chats' => 'array',
         'channel_participants' => 'array',
         'usernames' => 'array',
+        'session' => 'arrayNullCache'
     ];
 
+    /**
+     * Serialize session, returning object to serialize to db.
+     *
+     * @return \Generator
+     */
+    public function serializeSession(object $data): \Generator
+    {
+        if ($this->session instanceof MemoryArray) {
+            return $data;
+        }
+        yield $this->session['data'] = \serialize($data);
+        return $this->session;
+    }
+
     /**
      * Constructor function.
      *
@@ -1130,6 +1154,24 @@ class MTProto extends AsyncConstruct implements TLCallback
         $this->unreference();
         $this->logger("Successfully destroyed MadelineProto");
     }
+    /**
+     * Restart IPC server instance.
+     *
+     * @internal
+     */
+    public function restartIpcServer(): Promise
+    {
+        return new Success(); // Can only be called from client
+    }
+    /**
+     * Whether we're an IPC client instance.
+     *
+     * @return boolean
+     */
+    public function isIpc(): bool
+    {
+        return false;
+    }
     /**
      * Parse, update and store settings.
      *
@@ -1166,8 +1208,7 @@ class MTProto extends AsyncConstruct implements TLCallback
         $this->setupLogger();
 
         if ($reinit) {
-            $this->__construct();
-            yield from $this->initAsynchronously();
+            yield from $this->__construct_async($this->settings);
         }
     }
     /**
diff --git a/src/danog/MadelineProto/Serialization.php b/src/danog/MadelineProto/Serialization.php
index 3e38ecd7..8ed8f6e3 100644
--- a/src/danog/MadelineProto/Serialization.php
+++ b/src/danog/MadelineProto/Serialization.php
@@ -22,6 +22,8 @@ namespace danog\MadelineProto;
 use Amp\Deferred;
 use Amp\Loop;
 use Amp\Promise;
+use danog\MadelineProto\Db\DbArray;
+use danog\MadelineProto\Db\DriverArray;
 use danog\MadelineProto\Ipc\Server;
 use danog\MadelineProto\MTProtoSession\Session;
 
@@ -191,6 +193,10 @@ abstract class Serialization
 
         if ($isNew) {
             $unserialized = yield from $session->unserialize();
+            if ($unserialized instanceof DriverArray) {
+                yield from $unserialized->initConnection($unserialized->dbSettings);
+                $unserialized = \unserialize(yield $unserialized['data']);
+            }
         } else {
             $unserialized = yield from self::legacyUnserialize($session->getLegacySessionPath());
         }
diff --git a/src/danog/MadelineProto/Settings.php b/src/danog/MadelineProto/Settings.php
index e489d280..6be169d9 100644
--- a/src/danog/MadelineProto/Settings.php
+++ b/src/danog/MadelineProto/Settings.php
@@ -177,6 +177,12 @@ class Settings extends SettingsAbstract
                 $this->serialization->merge($settings);
             } elseif ($settings instanceof TLSchema) {
                 $this->schema->merge($settings);
+            } elseif ($settings instanceof DatabaseAbstract) {
+                if (!$this->db instanceof $settings) {
+                    $this->db = $settings;
+                } else {
+                    $this->db->merge($settings);
+                }
             }
             return;
         }