Can Laravel 5 handle 1000 concurrent users without lagging badly?

I wanted to know that if 1000 users are concurrently using a website built with laravel 5 and also quering database regularly then how does laravel 5 perform ? I know it would be slow but will it be highly slow that it would be unbearable ? Note that i am also going to use ajax a lot.

Please also provide some some tools through which i can check the speed of my laravel 5 application as well as how it will perform when there is actual load as well as other tools through which i can test speed and performance.

And it would be great if someone has real experience of using laravel especially Laravel 5.

And what about Lumen does that really make application faster than laravel and how much ?

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