Tim Funk wrote:
11.Timestamps & System.currentTimeMillis
System.currentTimeMillis is invoked everywhere during the chain of
events for a HTTP requests, even though most dates only need
precision down to the second.
I've received feedback that this could be improved by keeping a
time service, that updates a timestamp every second, and therefor
reduces the number of system calls
I think we would need to prove the theory before committing to the
implementation, but that should be pretty easy
System.currentTimeMillis() is *very* fast. [System.nanoTime() is not
necessarily and can be relatively slow on some hardware.]
Many algorithms used to format System.currentTimeMillis() into a human
readable date format are fairly slow. I'm not sure what Tomcat is
currently using here, but that would be the only thing I'd be concerned
about. It would seem sufficient just to make sure this conversion is
efficient and/or not called with any ridiculous frequency.
--
Jess Holle
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