Mastering Nginx

Rewrite Rule Guide

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# note the quotes around the regular expression - these

are

# required because we used {} within the expression

itself

rewrite '^/images/([a-z]{2})/([a-z0-9]{5})/(.*)\.

(png|jpg|gif)$' /data?file=$3.$4;

# note that we didn't use the 'last' parameter above; if

we had,

# the variables below would not be set because NGINX

would

# have ended rewrite module processing

# here we set the variables that are used in the custom

log

# format 'imagelog'

set $image_file $3;

set $image_type $4;

}

location /data {

# we want to log all images to this specially-formatted

logfile

# to make parsing the type and size easier

access_log logs/images.log imagelog;

root /data/images;

# we could also have used the $image-variables we defined

# earlier, but referencing the argument is more readable

try_files /$arg_file /image404.html;

}

location = /image404.html {

# our special error message for images that don't exist

return 404 "image not found\n";

}

}