Added docs

Author: rennokki

config/websockets.php

@@ -214,6 +214,7 @@
 
         'logger' => \BeyondCode\LaravelWebSockets\Statistics\Logger\MemoryStatisticsLogger::class,
         // 'logger' => \BeyondCode\LaravelWebSockets\Statistics\Logger\NullStatisticsLogger::class,
+        // 'logger' => \BeyondCode\LaravelWebSockets\Statistics\Logger\RedisStatisticsLogger::class,
 
         /*
         |--------------------------------------------------------------------------

docs/horizontal-scaling/getting-started.md

@@ -32,3 +32,23 @@ Now, when your app broadcasts the message, it will make sure the connection reac
 The available drivers for replication are:
 
 - [Redis](redis)
+
+## Configure the Statistics driver
+
+If you work with multi-node environments, beside replication, you shall take a look at the statistics logger. Each time your user connects, disconnects or send a message, you can track the statistics. However, these are centralized in one place before they are dumped in the database.
+
+Unfortunately, you might end up with multiple rows when multiple servers run in parallel.
+
+To fix this, just change the `statistics.logger` class with a logger that is able to centralize the statistics in one place. For example, you might want to store them into a Redis instance:
+
+```php
+'statistics' => [
+
+    'logger' => \BeyondCode\LaravelWebSockets\Statistics\Logger\RedisStatisticsLogger::class,
+
+    ...
+
+],
+```
+
+Check the `websockets.php` config file for more details.

docs/horizontal-scaling/redis.md

@@ -34,4 +34,3 @@ You can set the connection name to the Redis database under `redis`:
 ```
 
 The connections can be found in your `config/database.php` file, under the `redis` key. It defaults to connection `default`.
-