created cache command

src/Providers/LighthouseServiceProvider.php

@@ -35,6 +35,10 @@ public function register()
         });
 
         $this->app->alias('graphql', GraphQL::class);
+
+        $this->commands([
+            \Nuwave\Lighthouse\Support\Console\Commands\CacheCommand::class,
+        ]);
     }
 
     /**

src/Support/Console/Commands/CacheCommand.php

@@ -0,0 +1,45 @@
+<?php
+
+namespace Nuwave\Lighthouse\Support\Console\Commands;
+
+use Illuminate\Console\Command;
+
+class CacheCommand extends Command
+{
+    /**
+     * The name and signature of the console command.
+     *
+     * @var string
+     */
+    protected $signature = 'lighthouse:cache';
+
+    /**
+     * The console command description.
+     *
+     * @var string
+     */
+    protected $description = 'Cache GraphQL AST.';
+
+    /**
+     * Execute the console command.
+     *
+     * @return mixed
+     */
+    public function handle()
+    {
+        if (! config('lighthouse.cache')) {
+            $this->error('The `lighthouse.cache` setting must be set to a file path.');
+
+            return;
+        }
+
+        $schema = graphql()->stitcher()->stitch(
+            config('lighthouse.global_id_field', '_id'),
+            config('lighthouse.schema.register')
+        );
+
+        graphql()->cache()->set($schema);
+
+        $this->info('GraphQL AST successfully cached.');
+    }
+}