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93cc18ac42
For many years, an unset load balancing algorithm would use "roundrobin". It was shown several times that "random" with at least 2 draws (the default) generally provides better performance and fairness in that it will automatically adapt to the server's load and capacity. This was further described with numbers in this discussion: https://www.mail-archive.com/haproxy@formilux.org/msg46011.html https://github.com/orgs/haproxy/discussions/3042 BTW there were no objection and only support for the change. The goal of this patch is to change the default algo when none is specified, from "roundrobin" to "random". This way, users who don't care and don't set the load balancing algorithm will benefit from a better one in most cases, while those who have good reasons to prefer roundrobin (for session affinity or for reproducible sequences like used in regtests) can continue to specify it. The vast majority of users should not notice a difference.
