Changes with nginx 1.23.1                                        19 Jul 2022

    *) Feature: memory usage optimization in configurations with SSL
       proxying.
优化在ssl proxy代理的时候内存选项
    *) Feature: looking up of IPv4 addresses while resolving now can be
       disabled with the "ipv4=off" parameter of the "resolver" directive.
ipv4 增加了 off选项参数
    *) Change: the logging level of the "bad key share", "bad extension",
       "bad cipher", and "bad ecpoint" SSL errors has been lowered from
       "crit" to "info".
修改了log  从crit 到info 等级
以下是bug 修复
    *) Bugfix: while returning byte ranges nginx did not remove the
       "Content-Range" header line if it was present in the original backend
       response.

    *) Bugfix: a proxied response might be truncated during reconfiguration
       on Linux; the bug had appeared in 1.17.5.

http://nginx.org/download/nginx-1.23.1.tar.gz