Katran is a high-performance layer 4 load balancer. It's not for everyone, but if you need redundancy for layer 7 load balancers (such as HAProxy or NGINX) or need to scale load balancers to two or more servers, then we recommend assessing Katran. We see Katran as a flexible and efficient choice over techniques such as round-robin DNS over L7 load balancers or the IPVS Kernel model that network engineers usually adopt to solve similar challenges.