set default cache to 1min max to prevent long cache problems
set default cache to 1min max to prevent long cache problems

be-oi/beoi-contest-platform,be-oi/beoi-contest-platform,be-oi/beoi-contest-platform,be-oi/beoi-contest-platform,be-oi/beoi-contest-platform,be-oi/beoi-contest-platform