But if NGINX/HAProxy, hipache, and Vulcan work fine, why would you need IPVS? Sibiryov said that if you have more than one instance of an app, you need load balancing. HAProxy and MySQL proxy were around 60 percent of its speed. In testing, IPVS’ performance was nearly the same TPS as a normal connection. Rewrites DST IP, uses the same L4 and behaves like a NAT, rewriting the ip packets and forwarding request and response traffic. The response skips the load balancer, so only the request goes through IPVS. Encapsulates IP and is routable anywhere. IPVS forwards traffic from clients to back-ends, meaning you can load balance anything, even DNS! Modes it can use include: It’s not a proxy - it’s a forwarder that runs on Layer 4. Other features include NAT, tunneling, and direct routing. ![]() It supports TCP, SCTP, and UDP and can achieve incredibly fast speeds, often within 5 percent of direct connection speeds. ![]() ![]() To be precise, IPVS (IP Virtual Server) has been in the kernel for 15 years, and it’s based on netfilter. At DockerCon Europe, Andrey Sibiryov, a senior engineer at Uber Technologies, demonstrated how to improve load-balancing performance using an open-source technology that’s been part of the Linux kernel for more than a decade - IPVS.Īndrey Sibiryov discusses IPVS at DockerCon Europe.
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