$ curl -H 'Host: en.wikipedia.org' -v 'http://appservers.svc.eqiad.wmnet/wiki/Touch%C3%A9_%28disambiguation%29' 2>&1 >/dev/null |egrep '(HTTP|Cache-control)' > GET /wiki/Touch%C3%A9_%28disambiguation%29 HTTP/1.1 < HTTP/1.1 200 OK < Cache-control: private, must-revalidate, max-age=0 $ curl -H 'Host: en.wikipedia.org' -v 'http://appservers.svc.eqiad.wmnet/wiki/Touch_%28disambiguation%29' 2>&1 >/dev/null |egrep '(HTTP|Cache-control)' > GET /wiki/Touch_%28disambiguation%29 HTTP/1.1 < HTTP/1.1 200 OK < Cache-control: private, must-revalidate, max-age=0
but
$ curl -H 'Host: en.wikipedia.org' -v 'http://appservers.svc.eqiad.wmnet/wiki/Touch%C3%A9_(disambiguation)' 2>&1 >/dev/null |egrep '(HTTP|Cache-control)' > GET /wiki/Touch%C3%A9_(disambiguation) HTTP/1.1 < HTTP/1.1 200 OK < Cache-control: s-maxage=2678400, must-revalidate, max-age=0 $ curl -H 'Host: en.wikipedia.org' -v 'http://appservers.svc.eqiad.wmnet/wiki/Touch_(disambiguation)' 2>&1 >/dev/null |egrep '(HTTP|Cache-control)' > GET /wiki/Touch_(disambiguation) HTTP/1.1 < HTTP/1.1 200 OK < Cache-control: s-maxage=2678400, must-revalidate, max-age=0
And if you think this is related to parentheses specifically:
$ curl -H 'Host: el.wikipedia.org' -v 'http://appservers.svc.eqiad.wmnet/wiki/%CE%A0%CF%8D%CE%BB%CE%B7:%CE%9A%CF%8D%CF%81%CE%B9%CE%B1' 2>&1 >/dev/null |egrep '(HTTP|Cache-control)' > GET /wiki/%CE%A0%CF%8D%CE%BB%CE%B7:%CE%9A%CF%8D%CF%81%CE%B9%CE%B1 HTTP/1.1 < HTTP/1.1 200 OK < Cache-control: s-maxage=2678400, must-revalidate, max-age=0 $ curl -H 'Host: el.wikipedia.org' -v 'http://appservers.svc.eqiad.wmnet/wiki/Πύλη:Κύρια' 2>&1 >/dev/null |egrep '(HTTP|Cache-control)' > GET /wiki/Πύλη:Κύρια HTTP/1.1 < HTTP/1.1 200 OK < Cache-control: private, must-revalidate, max-age=0
Possibly related to T89673?