You may think these steps are joke but after making these simple steps your laravel app will be responding much faster, probably 100-200 ms faster.
php artisan route:cache
If you have closures, you must replace them with controller actions. This is very important. Then run command again.
IMPORTANT: After every deploy of changed routes, you must run this command.
php artisan config:cache
IMPORTANT: After every deploy of changed config you must run this command.
php artisan optimize --force