[1] [CITE@en-US[Error 524 – CloudFlare Support]]
( ([TIME[2014-10-23 16:06:04 +09:00]] 版))
<https://support.cloudflare.com/hc/en-us/articles/200171926-Error-524>

[2] [CITE[Cloudflare HTTP POST 524 Timeout with node.js + express - Stack Overflow]]
( ([TIME[2015-01-14 11:42:04 +09:00]] 版))
<http://stackoverflow.com/questions/27253756/cloudflare-http-post-524-timeout-with-node-js-express>