id summary reporter owner description type status priority milestone component version resolution keywords cc uname nginx_version 922 "proxy_cache use wrong file name, if set on backend ""gzip on""." lefoyer@… "proxy_cache use wrong file name (first request from firefox=md5(proxy_key), second request from chrome != md5(proxy_key)), if set on backend ""gzip on"". I am reproduse this bug on nginx 1.8.1 For reproduce: /etc/nginx# cat nginx.conf user www-data; pid /run/nginx.pid; events { worker_connections 786; } http { proxy_cache_path /var/cache/fscache/ngcache levels=1:2 keys_zone=fastcache:40m inactive=7d max_size=600g use_temp_path=off; proxy_cache_min_uses 1; proxy_cache_methods GET HEAD; proxy_http_version 1.1; include /etc/nginx/mime.types; default_type application/octet-stream; ssl off; access_log /var/log/nginx/access.log; error_log /var/log/nginx/error.log; gzip on; gzip_disable ""msie6""; gzip_vary on; gzip_proxied any; gzip_comp_level 6; gzip_buffers 16 8k; gzip_http_version 1.1; gzip_types text/plain text/css application/json application/x-javascript text/xml application/xml application/xml+rss text/javascript image/svg+xml; server { listen 127.0.0.1:80; server_name test.local *.test.local; root /var/www/html; index index.html index.htm; location / { try_files $uri $uri/ =404; } } server { listen 80; server_name test.local *.test.local; root /var/www/html; index index.html index.htm; location / { proxy_pass http://127.0.0.1:80/; proxy_cache fastcache; proxy_cache_key $request_method|$host|$uri; proxy_cache_valid 200 15m; proxy_set_header Host $http_host; } } } /var/www/html/test# cat test.css table.programm-table { margin: 0 0 35px !important; } table.programm-table { } table.programm-table tbody tr { background: #F9F9F9; } table.programm-table tbody tr td input, table.programm-table tbody tr td select { width: 100%; } #plupload-upload-ui .in-progress { display: none; } #plupload-upload-ui.in-progress .can-upload { display: none; } #plupload-upload-ui.in-progress .in-progress { display: block; } #xml-programm-posts, #xml-programms-list { margin: 40px 0 0; } .xml-posts h2 { padding: 10px !important; background: #F9F9F9; border: 1px solid #e5e5e5; -webkit-box-shadow: 0 -1px 1px rgba(0,0,0,.04); box-shadow: 0 -1px 1px rgba(0,0,0,.04); border-bottom: none; } write in host test.local you wan server ip. Request http://test.local/test/test.css from Firefox and Chrome. My result in attach (2 file). " defect closed minor nginx-module 1.9.x invalid proxy_cache admin@… Linux hw-sld-prod-front-001 3.16.0-4-amd64 #1 SMP Debian 3.16.7-ckt20-1+deb8u3 (2016-01-17) x86_64 GNU/Linux "nginx version: nginx/1.9.10 built with OpenSSL 1.0.1k 8 Jan 2015 TLS SNI support enabled configure arguments: --with-cc-opt='-g -O2 -fPIE -fstack-protector-strong -Wformat -Werror=format-security -D_FORTIFY_SOURCE=2' --with-ld-opt='-fPIE -pie -Wl,-z,relro -Wl,-z,now' --prefix=/usr/share/nginx --conf-path=/etc/nginx/nginx.conf --http-log-path=/var/log/nginx/access.log --error-log-path=/var/log/nginx/error.log --lock-path=/var/lock/nginx.lock --pid-path=/run/nginx.pid --http-client-body-temp-path=/var/lib/nginx/body --http-fastcgi-temp-path=/var/lib/nginx/fastcgi --http-proxy-temp-path=/var/lib/nginx/proxy --http-scgi-temp-path=/var/lib/nginx/scgi --http-uwsgi-temp-path=/var/lib/nginx/uwsgi --with-debug --with-pcre-jit --with-ipv6 --with-http_ssl_module --with-http_stub_status_module --with-http_realip_module --with-http_auth_request_module --with-http_addition_module --with-http_dav_module --with-http_flv_module --with-http_geoip_module --with-http_gunzip_module --with-http_gzip_static_module --with-http_image_filter_module --with-http_mp4_module --with-http_perl_module --with-http_random_index_module --with-http_secure_link_module --with-http_v2_module --with-http_sub_module --with-http_xslt_module --with-mail --with-mail_ssl_module --with-stream --with-stream_ssl_module --with-threads --add-module=/build/nginx-1.9.10/debian/modules/headers-more-nginx-module --add-module=/build/nginx-1.9.10/debian/modules/nginx-auth-pam --add-module=/build/nginx-1.9.10/debian/modules/nginx-cache-purge --add-module=/build/nginx-1.9.10/debian/modules/nginx-dav-ext-module --add-module=/build/nginx-1.9.10/debian/modules/nginx-development-kit --add-module=/build/nginx-1.9.10/debian/modules/nginx-echo --add-module=/build/nginx-1.9.10/debian/modules/ngx-fancyindex --add-module=/build/nginx-1.9.10/debian/modules/nginx-http-push --add-module=/build/nginx-1.9.10/debian/modules/nginx-lua --add-module=/build/nginx-1.9.10/debian/modules/nginx-upload-progress --add-module=/build/nginx-1.9.10/debian/modules/nginx-upstream-fair --add-module=/build/nginx-1.9.10/debian/modules/ngx_http_substitutions_filter_module "