It would be good if you know when this call gives updated data. If you
get updated data every 30 days then cache it on dispatcher. Below code
cache xml calls for 12 hr. Add this code in vhost file. Header set Cache-Control
"max-age=120,s-maxage=0,stale-while-revalidate=43200,stale-if-error=43200"
"expr=%{REQUEST_STATUS} < 400" Header set Age 0