nginx plus: sticky session with dynamic upstreams ?

[dshe]

Wonder what my options are in nginx plus to have sticky requests when
upstream are dynamic.  As I understand there are 2 ways to have dynamic
upstreams in nginx plus: dns lookup with resolve/resolver or using
ngx_http_upstream_conf_module. Will any/both work ?

Posted at Nginx Forum: https://forum.nginx.org/read.php?2,264804,264804#msg-264804