How to prevent DDos attack

Throttling is an obvious method, sure there are more. You need to google your options.

@CJJ :- do you know how to use throttling for route group.. i already use this for login.

thanks

@sam0081 Afraid not but I would investigate throttling on your webserver; Apache, Nginx etc

Laravel has throttling out of the box for auth. To answer your question, you can't stop DDOS attacks. All you can do is handle it so I would recommend Cloudflare. They do a great job with handling attacks. Throttling Apache or Nginx will not stop the effects of the attack.