implement powerful viewer count system

app/Models/Broadcast.php

@@ -37,6 +37,7 @@ class Broadcast extends Model
     {
         return [
             'recording_enabled' => 'boolean',
+            'viewer_peak' => 'integer',
             'started_at' => 'datetime',
             'ended_at' => 'datetime',
         ];

app/Models/Channel.php

@@ -33,6 +33,7 @@ class Channel extends Model
     {
         return [
             'is_live' => 'boolean',
+            'viewer_count' => 'integer',
             'suspended_at' => 'datetime',
         ];
     }