Invalidate cache for static files?

[Phillip B Oldham]

What would be the simplest way to invalidate browser cache of static 
files served by nginx?

For instance, we have a website which is in active development. We get a 
reasonable amount of traffic, but we often get complaints when we update 
the live files because some browsers are working with a mix of fresh 
(live) and stale (cached) js/css files. We'd like to inform/force 
browsers that the file is new and should be updated.
-- 

*Phillip B Oldham*
The Activity People
phill at theactivitypeople.co.uk <mailto:phill at theactivitypeople.co.uk>

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