Hello! On Tue, Mar 12, 2019 at 12:57:59AM +0100, Manuel wrote:
> Hello, > > nginx writes the rsponse from a proxy to disk. eg. > [...] > Server: nginx > Date: Mon, 11 Mar 2019 23:23:28 GMT > Content-Type: image/png > Content-Length: 45360 > Connection: close > Expect-CT: max-age=0, report-uri=" > https://openstreetmap.report-uri.com/r/d/ct/reportOnly"; > ETag: "314b65190a8968893c6c400f29b13369" > Cache-Control: max-age=126195 > Expires: Wed, 13 Mar 2019 10:26:43 GMT > Access-Control-Allow-Origin: * > X-Cache: MISS from trogdor.openstreetmap.org > X-Cache-Lookup: HIT from trogdor.openstreetmap.org:3128 > Via: 1.1 trogdor.openstreetmap.org:3128 (squid/2.7.STABLE9) > Set-Cookie: qos_token=031042; Max-Age=3600; Domain=openstreetmap.org; Path=/ > Strict-Transport-Security: max-age=31536000; includeSubDomains; preload > [...] > > is it possible to modify the Cache-Control and Expires header before the > response is written to disk? No. Cache stores the original response as got from the upstream server. You can, however, return different headers to clients, using the "proxy_hide_header", "add_header", and "expires" directives. In case of Cache-Control and Expires, just "expires" as already present in your configuration should be enough. [...] > The problem is: the cached tiles on disk do not have "Cache-Control: > max-age=2592000" but "Cache-Control: max-age=126195" regardless of setting > proxy_ignore_headers "Cache-Control". > I assumed that setting proxy_ignore_headers "Cache-Control"; and "expires > 30d;" will remove the header from the response and write the corresponding > "Cache-Control" and "Expires" with the 30d. Well, your assumption is not correct. The "proxy_ignore_headers" directive controls if nginx itself will respect Cache-Control or not when caching a response. And the "expires" directive controls what will be returned to clients. >From practical point of view, however, these should be enough to return correct responses to clients. What is stored in the cache file is irrelevant. -- Maxim Dounin http://mdounin.ru/ _______________________________________________ nginx mailing list nginx@nginx.org http://mailman.nginx.org/mailman/listinfo/nginx
