настроил nginx на отдачу статики из файлового кэша, указал expires, при обновлении страницы f5 возвращает 304, при переходе по ссылкам и возврате на страницу все равно 200
вот конфиг:

user www;
worker_processes 1;
timer_resolution 100ms;
worker_priority -5;
error_log /var/log/nginx/error.log;
pid /var/run/nginx.pid;

events {
worker_connections 1024;
# multi_accept on;
use epoll;
}

http {
include /etc/nginx/mime.types;
#limit_req_zone $binary_remote_addr zone=ddos:10m rate=100r/s;
access_log /var/log/nginx/access.log;
proxy_cache_path /var/cache/nginx levels=1:2 keys_zone=default:1024m inactive=1d max_size=1024m;
#sendfile on;
#tcp_nopush on;

#keepalive_timeout 0;
keepalive_timeout 65;
tcp_nodelay on;

gzip on;
gzip_buffers 4 8k;
gzip_comp_level 4;
gzip_http_version 1.1;
gzip_proxied any;
gzip_types text/html text/plain application/xml application/x-javascript text/css;
include /etc/nginx/conf.d/*.conf;
include /etc/nginx/sites-enabled/*;
client_max_body_size 16m;
#log_format isp '$bytes_sent $request_length';
server {
listen 62.75.216.187:80;
server_name site.com combats2.com www.site.com www.combats2.com;
error_page 404 /404.html;
location /404.html {
internal;
}
proxy_intercept_errors on;
location ~* ^/(webstat/|awstats|webmail/|myadmin/|manimg/) {
proxy_pass http://62.75.216.187:8080;
proxy_redirect off;
proxy_set_header Host $host;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header X-Real-IP $remote_addr;
}
location / {
#limit_req zone=ddos burst=10;
proxy_pass http://62.75.216.187:8080;
proxy_redirect off;
proxy_set_header Host $host;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header X-Real-IP $remote_addr;
}
location ~* ^.+\.(jpg|jpeg|gif|png|js|css|html)$ {
root /var/www/www/data/www/site.com;
access_log off;
expires 1d;
add_header Cache-Control public;
proxy_buffering on;
proxy_cache default;
proxy_cache_valid 404 502 503 60m;
proxy_cache_valid any 1d;
}
}
server {
listen 62.75.216.187:80;
server_name combats.site.com www.combats.site.com;
rewrite ^(/manager/.*)$ https://$host$1 permanent;
error_page 404 /404.html;
location /404.html {
internal;
}
proxy_intercept_errors on;
location ~* ^/(webstat/|awstats|webmail/|myadmin/|manimg/) {
proxy_pass http://62.75.216.187:8080;
proxy_redirect http://combats.site.com:8080/ /;
proxy_set_header Host $host;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header X-Real-IP $remote_addr;
}
location / {
#limit_req zone=ddos burst=10;
proxy_pass http://62.75.216.187:8080;
proxy_redirect http://combats.site.com:8080/ /;
proxy_set_header Host $host;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header X-Real-IP $remote_addr;
}
location ~* ^.+\.(jpg|jpeg|gif|png|js|css|html)$ {
root /var/www/www/data/www/combats.site.com;
access_log off;
expires 3d;
add_header Cache-Control public;
proxy_buffering on;
proxy_cache default;
proxy_cache_valid 404 502 503 60m;
proxy_cache_valid any 1d;
}
}
server {
listen 62.75.216.187:80;
#proxy_buffering on;
#proxy_cache default;
#proxy_cache_valid 404 502 503 60m;
#proxy_cache_valid any 1d;
server_name img.site.com www.img.site.com;
rewrite ^(/manager/.*)$ https://$host$1 permanent;
error_page 404 /404.html;
location /404.html {
internal;
}
proxy_intercept_errors on;
location ~* ^/(webstat/|awstats|webmail/|myadmin/|manimg/) {
proxy_pass http://62.75.216.187:8080;
proxy_redirect http://img.site.com:8080/ /;
proxy_set_header Host $host;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header X-Real-IP $remote_addr;
}
location / {
#limit_req zone=ddos burst=10;
proxy_pass http://62.75.216.187:8080;
proxy_redirect http://img.site.com:8080/ /;
proxy_set_header Host $host;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header X-Real-IP $remote_addr;
}
location ~* ^.+\.(jpg|jpeg|gif|png|js|css|html)$ {
root /var/www/www/data/www/img.site.com;
access_log off;
expires 3d;
add_header Cache-Control public;
}
proxy_buffering on;
proxy_cache default;
proxy_cache_valid 404 502 503 60m;
proxy_cache_valid any 1d;
}

}
не знаю насколько он правильный )