Possible Duplicate:
How do you do Load Testing and Capacity Planning for Web Sites
Can we manage traffic on a website by replicating that into a cloud after the highest possible load on that site?
Like a website can allow 7000 user to surf on that site (this may be according to data traffic) without any trouble loading pages smoothly and when the count reaches 7001 it starts to take some time loading pages and hanging sometimes. So when this happens the site should make a exact replica of itself in cloud and it should work like the original one without any trouble shifting extra traffic into replicated site.