Asynchronous ModSecurity (ModSec) is a feature that allows ModSec rules to be processed asynchronously, improving performance and reducing the risk of blocking legitimate traffic. Traditional ModSec rules processing is synchronous, which means that each request is blocked while the rules are processed. With asynchronous ModSec, the rules are processed in the background, allowing requests to continue uninterrupted. This can be especially useful for high-traffic websites or those with real-time requirements, where even small delays can cause significant problems. Asynchronous ModSec is typically implemented using non-blocking I/O and event-driven programming techniques.
