We currently have users pushing hundreds of millions of requests on single domains. There are many factors that impact how easily a web application can scale, including the application’s code and its architecture. Rackers are ready to review your web application/solution and provide guidance on how to optimize it for Cloud Sites. If an application is not properly built for scale, Cloud Sites will not be able to compensate for it.
Also, if you are expecting a massive surge in traffic (perhaps your site was featured on Oprah) please contact us via chat, phone, or ticket in advance and we will help you prepare for it. The information we will need can be at the end of the How do I optimize my website? article.
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