Hi We use nginx as proxy_cache and identified a different somehow weird behaviour compared to 1.6.:
In some situations we get a MISS or EXPIRED in 1.8, where with the same config, same resource and same origin, we got a HIT in 1.6. The weird thing is, it does never change to a HIT even after several requests to the same resource! We always get MISSED or EXPIRED. We do not use proxy_cache_min_uses. Below I show you some configs, nothing really fancy. Does anyone use 1.8 for proxy_cache? 1.6: rpm spec and sources: https://github.com/swisstxt/rpm-pcache/commit/cabe5f83b8c02ae8ce74543f669c9b0c0fc41f03 1.8: rpm spec and sources: https://github.com/swisstxt/rpm-pcache/commit/da336fd143e21500e445df4a5ece0af7f8a9448b Response from ORIGIN: Cache-Control: public, max-age=49 Content-Type: application/json; charset=utf-8 Content-MD5: O+EP2TJJZQZr61/mhkVqdA== Expires: Mon, 01 Jun 2015 11:09:05 GMT Last-Modified: Mon, 01 Jun 2015 11:08:05 GMT Vary: * access-control-allow-origin: * Date: Mon, 01 Jun 2015 11:08:15 GMT Content-Length: 743 nginx respone in 1.6.: Server: nginx Date: Mon, 01 Jun 2015 11:20:59 GMT Content-Type: application/json; charset=utf-8 Content-Length: 728 Connection: keep-alive Cache-Control: public, max-age=60 Content-MD5: aMGk4M7K6qzjnOIvVfy6fg== Expires: Mon, 01 Jun 2015 11:21:48 GMT Last-Modified: Mon, 01 Jun 2015 11:20:48 GMT Vary: * access-control-allow-origin: * X-Node: cache.example.com X-Cached: HIT 200 OK nginx response in 1.8.: Server: nginx Date: Mon, 01 Jun 2015 11:23:41 GMT Content-Type: application/json; charset=utf-8 Content-Length: 728 Connection: keep-alive Cache-Control: public, max-age=56 Content-MD5: aMGk4M7K6qzjnOIvVfy6fg== Expires: Mon, 01 Jun 2015 11:24:38 GMT Last-Modified: Mon, 01 Jun 2015 11:23:38 GMT Vary: * access-control-allow-origin: * X-Node: cache.example.com X-Cached: MISS 200 OK 2nd nginx response in 1.8.: Server: nginx Date: Mon, 01 Jun 2015 11:24:53 GMT Content-Type: application/json; charset=utf-8 Content-Length: 728 Connection: keep-alive Cache-Control: public, max-age=57 Content-MD5: aMGk4M7K6qzjnOIvVfy6fg== Expires: Mon, 01 Jun 2015 11:25:50 GMT Last-Modified: Mon, 01 Jun 2015 11:24:50 GMT Vary: * access-control-allow-origin: * X-Node: cache.example.com X-Cached: MISS 200 OK #file nginx.conf: http { include /etc/nginx/mime.types; default_type application/octet-stream; add_header X-Node $hostname; add_header X-Cached $upstream_cache_status; # changed to fake IPs resolver 1.2.3.4 1.2.3.5; log_format main '$remote_addr - $remote_user [$time_local] $request ' '"$status" $body_bytes_sent "$http_referer" ' '"$http_user_agent" "$http_x_forwarded_for"'; access_log /var/log/nginx/access.log main; server_tokens off; sendfile on; keepalive_timeout 10s; tcp_nopush on; tcp_nodelay on; proxy_temp_path /srv/www/temp; proxy_connect_timeout 10s; proxy_send_timeout 20s; proxy_read_timeout 20s; send_timeout 30s; charset utf-8; charset_types application/javascript text/css application/atom+xml; ssl_protocols TLSv1 TLSv1.1 TLSv1.2; ... } #file foobar.example.com.conf: upstream foobar-origins { server lb.foobar.example.com; } proxy_cache_path /srv/www/cache/foobar.example.com levels=1:2 keys_zone=foobar:10m inactive=2d max_size=1g; server { listen 1.1.104.140:80; server_name foobar.example.com; access_log /srv/www/log/foobar.example.com/access.log combined; error_log /srv/www/log/foobar.example.com/error.log; access_log /srv/www/log/foobar.example.com/pcache.log pcache_json buffer=16k; set $volume_key "foobar"; access_log /srv/www/log/global_pcache_volume.log volume-key; proxy_set_header Host $host; proxy_set_header X-Real-IP $remote_addr; proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for; proxy_cache_key "$scheme$host$request_uri"; proxy_connect_timeout 60s; proxy_send_timeout 60s; proxy_read_timeout 60s; location / { proxy_cache foobar; proxy_cache_valid 200 206 301 302 5m; proxy_cache_valid any 10s; proxy_cache_lock on; proxy_cache_use_stale error timeout invalid_header updating http_500 http_502 http_503 http_504 http_403 http_404; proxy_pass http://foobar-origins; } ... } Any hints? Yours René _______________________________________________ nginx mailing list nginx@nginx.org http://mailman.nginx.org/mailman/listinfo/nginx
