Zero-downtime deployments have existed years (perhaps decades?) before k8s was released to the public. Controlling the upstream traffic via haproxy/nginx allow

Zero-downtime deployments have existed years (perhaps decades?) before k8s was released to the public. Controlling the upstream traffic via haproxy/nginx allowed Ops to roll out blue-green, canary and waterfall/rolling deployment methods albeit with more human interaction. Digital Ocean have this [0] article from 2014 on load balancing. [0] https://www.digitalocean.com/community/tutorials/an-introduction-to-haproxy-and-load-balancing-concepts https://www.digitalocean.com/community/tutorials/an-introduc...