How to make the log file printed by access_log split

[shawnxzhou]

what's the limit of the size of log file, and what will happen when it
reaches the limitation?
if I want to split the log file by timeline, say start a new file on the
beginning of an hour, how can I configure ngnix?

thanks

Posted at Nginx Forum: http://forum.nginx.org/read.php?2,241226,241226#msg-241226