sidebar

proxy_cache_path  /var/cache/nginx/sidebar levels=1:2 keys_zone=SIDEBAR:10m inactive=24h  max_size=1g;

upstream sidebar {  
    ip_hash;

    server xxx.xxx.xx.xxx:80;
    server yyy.yyy.yy.yyy:80;
}

server {  
    listen 0.0.0.0:80;
    server_name sidebar.io;

    access_log /var/log/nginx/sidebar.access;

    set $skip_cache 0;
    location / {
        # PROXY STARTS HERE ========
        proxy_pass http://sidebar/;
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection "upgrade";
        proxy_set_header Host $http_host;

        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header X-Forward-Proto http;
        proxy_set_header X-Nginx-Proxy true;

        proxy_redirect off;

        # CACHING STARTS HERE ========
        if ($cookie_meteor_login_token) {
            set $skip_cache 1;
        }
        proxy_cache_bypass $skip_cache;
        proxy_no_cache $skip_cache;
        proxy_cache SIDEBAR;
        proxy_cache_valid 200 30s;
        proxy_cache_use_stale error timeout invalid_header updating http_500 http_502 http_503 http_504;
        proxy_ignore_headers "Cache-Control" "Expires";
        add_header X-Cached $upstream_cache_status;
    }
}