[plt-scheme] unit-based servlet vs module-based servlet?

Hi all -

yet another newbie question - what is the difference between unit-based
servlet and module-based servlet and when to choose which?  Are the two
comparable in terms of capabilities?  I look at the unit doc and notices
that it is analogous to a pluggable component and hence appears to have more
flexibility and power than module, so was wondering under what situations
would a module servlet be preferrable over a unit servlet.

Thanks,
yinso

-- 
http://www.yinsochen.com
...continuous learning...
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