I'm a little curious about CF's back-end for each contest.
In my country, Taiwan, there is an "educational" certification for average-level and low-level students who may not talented in programming called CPE (Collegiate Programming Examination).
They hold 4 times every year. There are about 1500 students, partitioned into about 50 exam rooms, connected through Internet, to participate this contest at the same time.
Even I haven't participated in CPE yet, but in my experience in ACM-ICPC regional, the PC^2 system are somehow slow to wait for my verdict if there is a lot of submissions in a short time.
Recently, some students participated in CPE argue that the judge process is slow, and the CPE system is modified from the DOMjudge.
I'm wondering is there an efficient jury system to meet such heavy load.
Well, I know the contest rule in CF is different from the one in ACM-ICPC (the CPE rule is same as ACM-ICPC), also different from the Google Code Jam.
Is there a jury system using ACM-ICPC rule and can hold maybe up to 5000 even 10000 contestants?
Maybe the most important factor is hardware issue (how many computers to absorb the submissions) not just software (jury system).
It seems the Cloud Computing is the trend in recent years. So how to scale up the jury system to hold more contestants?
This is very interesting.
The UVa online judge seems to renew their website (but I don't know their current progress), I'm looking forward to see it!