mod rewrite - Activate site maintenance via RewriteCond -f check? -

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i thought hitting file via -f (i think is) in mod_rewrite rewritecond, if file exists, rewrite maintenance page. don't think performance penalty should big, maybe people had other experiences or objections on idea?

why not this:

rewriterule !^maintenance$ maintenance [l]

and in there repond 503 status code.


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