Hello,

This would really depend on your website, I could suggest a few things:

• Run a few stess tests to see how many concurrent connections your website can handle, you can take a look at this article here on how to do that:

https://www.digitalocean.com/community/tutorials/an-introduction-to-load-testing

• Try to optimize your website, for example, if you are using Wordpress, you could delete all unnecessary plugins, install a caching plugin which would reduce the load on the server

• Maybe think of implementing a CDN, that way at least some of the load would be offloaded from the Droplet and will be handled by the CDN

• Optimize your services like MySQL, Apache/Nginx, PHP and etc

• Check your server resources usage and add additional resources. For example, if you notice that it is the RAM that is running really low, then upgrade your Droplet and add more RAM

Hope that this helps!
Regards,
Bobby