Can I Load Test Stratus ?

 
Load testing Stratus is not recommended.  All traffic on Mojo Stratus goes through CloudFront. It may block traffic it sees as malicious automatically.
 
If you really are after some testing, contact our support and use something like jMeter and keep the test at a low level.  Our support can help assist if you are still pre-live.  Sites on Stratus prior to launch are rate limited while they lack the GA codes to track sessions.  Our support can unlock the rate limit for a short time on request.
 
The catalogsearch paths are also rate limited by IP. We will not alter them for you as they are a common DDOS attack path on Magento stores.