Zero-Copy, SSD backend cache store outperforms memory backed stores with redically lower cost of deployment for similar store size. SSD back store further allows for much larger cache deployment than normally feasible with memory backed systems. On average, LiteSpeed Web ADC outperforms Varnish solutions by a factor of 2 in serving cached content.
| Memory Backed | WP Super Cache | |
|---|---|---|
| API | sendfile(), mmap() | write() |
| Scalability | Disk Size | RAM |
| Speed | ||
| Cost | - | |
| CPU Load | - | |
| Architecture | Event-Driven | Thread Based |