cpan.metacpan.org nginx Fastly config

gistfile1.txt

 http://nginx.org/en/docs/http/request_processing.html

# nginx first searches for the most specific prefix
# location given by literal strings regardless of the
# listed order. In the example configuration the only prefix
# location is ''/'�~] and since it matches any request it will
# be used as a last resort. Then nginx checks locations
# given by regular expression in the order listed in the
# configuration file. The first matching expression stops
# the search and nginx will use this location. If no regular
# expression matches a request, then nginx uses the most
# specific prefix location found earlier.

location ~ /authors/.*/CHECKSUMS$ {
  # checksum files can change with any upload
}
location ~* /authors/.*(readme|\.html|\.txt|\.[xy]ml|\.json|\.[pr]df|\.pod)(\.gz|\.bz2)?$ {
  # allowed to be overwritten by authors see:
  # http://pause.perl.org/pause/query?ACTION=pause_04about#upload
}
location ~ /authors/.*/$ {
  # directories
  autoindex on;
}
location ~ /authors/id/[^/]+$ {
  # files directly in /id/
}
location ~ /authors/.*/.*$ {
  # files in author directories, basically the
  # other regexes are above are the exceptions for this rule
  # See: https://www.fastly.com/blog/stale-while-revalidate/
  add_header Surrogate-Control 'max-age=31104000, stale-while-revalidate=31104000, stale-if-error=31104000';
}
location ~ /robots.txt$ {
  # robots gets requested a lot - let fastly cache
  # for an hour, revalidate in the background (up to a day) and serve from cache if error revalidating
  add_header Surrogate-Control 'max-age=3600, stale-while-revalidate=86400, stale-if-error=31104000';
}
location ~ /authors/ {
  # anything else
  autoindex on;
}