the expiry time is the start of 1970 (i.e. expired)
nil
it is Tue Jan 19 03:14:07 GMT Standard Time 2038
(i.e. when UNIX clocks will die)
# File lib/rinda/tuplespace.rb, line 97
def make_expires(sec=nil)
case sec
when Numeric
Time.now + sec
when true
Time.at(1)
when nil
Time.at(2**31-1)
end
end
