If the security key reached its expiry date, Redis will have deleted it automatically, so we can't load it anymore, however the kid that identifies it is still stored in Redis, so we need to prune it out. That's what PruneDeadKidsAsync does:
Rather than a hardcoded font list, confusable-vision auto-discovers every system font that contains Latin a-z:。关于这个话题，新收录的资料提供了深入分析
but you probably can’t hit the backends from the public internet.，更多细节参见新收录的资料
2019年，數十萬港人走上街頭，反對一項容許將疑犯移交中國大陸受審的修例草案。，详情可参考新收录的资料