SHZhang's blog

Frequent 502 Bad Gateway errors after the DDoS attack
By SHZhang, history, 5 years ago, In English

After the DDoS attack ended, while Codeforces is accessible again, 502 Bad Gateway errors frequently appear while trying to do so. Refreshing the page for a few times solves the problem temporarily.

Anyone having the same problem? Any explanation of why this happens?

  • Vote: I like it
  • +55
  • Vote: I do not like it

Comments Comments (3)
| Write comment?
»
5 years ago, # |
  Vote: I like it +31 Vote: I do not like it

Rofl. Cauht 502 while trying to go to this post

→ Reply
»
5 years ago, # |
  Vote: I like it +8 Vote: I do not like it

Same issue. I'm also getting the "Sorry it is a DDOS attack. The round will be unrated." message often, and worst of all, I can't see the tests for any submissions (the chrome console just says there's a 503 when trying to load tests).

It seems that the server is being cautious with requests or maybe just going crazy after being attacked.

→ Reply
»
5 years ago, # |
  Vote: I like it 0 Vote: I do not like it

Maybe Codeforces cache system stored that as well :P

→ Reply