Hello Everyone!

It's been almost two weeks since my last blog about Codeforces lagging, at first i thought that it is my problem. However some people said that they faced the same issue.

I made a little research. As i understood this issue is being from Asia, because i asked some people from different countries and almost all of those who are from Asia are lagging.

You might think, hmm, "maybe it is because of amount of people who are sending their codes at the same time".

But as i calculated there is about 86 people who are sending their solution every 1 minute (11:40 am GMT + 6), every check takes 3 to 20 seconds (maybe more when it is 50+ test cases). But i don't think that it is because of amount of people who are sending their solution, because during the contest more submissions than ever, it is about 1000 submissions in 1 minute, and all we have it is just a slow testing, not lagging.

So, then, why is it not lagging during contest, but sometimes it is lagging out of contest?

As i said before, Asia suffers from this issue the most, why? I believe that it is because of CDN locations, i think that the closest CDN is too far from us.

I expressed my thought about this issue. I am still young and can be wrong about this, but since we can share with our knowledge i want u to know what i think about it.

Video of me lagging, (i am lagging about 1-3 mins every 10-20 mins)