I have enjoyed using HAProxy for my own projects. Currently on 1.9.15. I tried moving to 2.x, but my ACL's broke when I changed to HTX. "%" started matching everything. Maybe I just need to escape it now. The silent-drop no longer closes the connection silently on my side in 2.x. (5.7.7 kernel may be part of this equation). I've not had time to debug it really. I would love to move to 2.x for the enhanced options around caching.