can someone make a guess how many concurrent users can LITESPEED handle on a site with this setting (considering all content is static and the rest in cache) ?.. all the dynamic content comes from a proxy context via xmlhttprequest (ajax) to a xml cached content. the proxy-target server is other than the lsws High I/O Quadruple Extra Large Instance (hi1.4xlarge) 60.5 GiB of memory 35 EC2 Compute Units (16 virtual cores*) 2 SSD-based volumes each with 1024 GB of instance storage 64-bit platform I/O Performance: Very High (10 Gigabit Ethernet) Storage I/O Performance: Very High*** EBS-Optimized Available: No** API name: hi1.4xlarge *8 cores + 8 hyperthreads for 16 virtual cores I am trying to prepare for an event we have every year that has over 90,000 concurrent connections for 24 hrs. We normally loadbalance 2 or 3 cache servers. But I want to give litespeed a chance for this year's. And yes this is considering the Enterprise 8 CPU version.