HAProxy provides active, passive, and agent health checks. HAProxy makes your web applications highly available by spreading requests across a pool of backend servers. If one or even several servers fail, clients can still use your app as long as there are other servers still running. The caveat is, HAProxy needs to know which servers are healthy. That’s why health checks are crucial.

Add IP-by-IP rate limiting to the HAProxy Kubernetes Ingress Controller. DDoS (distributed denial of service) events occur when an attacker or group of attackers flood your application or API with disruptive traffic, hoping to exhaust its resources and prevent it from functioning properly. Bots and scrapers, too, can misbehave, making far more requests than is reasonable.