Forum: Rails deployment Passenger with nginx not caching properly (cross post from passenger google group)

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Aeb1b044b20cf5de7028c1a456313e36?d=identicon&s=25 Senthil N. (senthilnambi)
on 2011-02-05 00:48
I've got latest passenger running with nginx with conf:

pid /opt/nginx/logs/;
# Run as the nginx user
user root;
worker_processes 2;

error_log /opt/nginx/logs/error.log notice;

events {
  worker_connections 1024;
  use epoll;

http {
  server_names_hash_bucket_size 64;
  # More Linux performance awesomeness
  tcp_nopush on;
  tcp_nodelay off;

  # Where to store the body of large client requests on disk
  # NGINX will stream this to disk before posting it to your Mongrels,
  # preventing slow clients tying up your app.
  client_body_temp_path /var/spool/nginx-client-body 1 2;

  # Max size of a request from a client (usually a POST). This will
  # the size of file uploads to your app
  client_body_buffer_size 8k;
  client_header_buffer_size 1k;
  client_max_body_size 1k;
  large_client_header_buffers 4 8k;

  ## Timeouts
  client_body_timeout 5;
  client_header_timeout 5;
  keepalive_timeout 5 5;
  send_timeout 5;

  ## General Options
  ignore_invalid_headers on;
  limit_zone carboncal $binary_remote_addr 1m;
  recursive_error_pages on;
  sendfile on;
  server_name_in_redirect off;
  server_tokens off;

  # passenger loading stuff
  passenger_ruby /usr/local/rvm/wrappers/ruby-1.9.2-p136/ruby;

  include /opt/nginx/conf/mime.types;
  default_type application/octet-stream;

  ## Compression
  gzip on;
  gzip_buffers 16 8k;
  #compression level between 1 and 9
  gzip_comp_level 9;
  gzip_http_version 1.0;
  gzip_min_length 0;
  gzip_types text/plain text/html text/css image/x-icon image/bmp
application/x-javascript text/xml application/xml application/xml+rss
text/javascript ;
  gzip_vary on;
  gzip_proxied any;
  # Some version of IE 6 don't handle compression well on some
mime-types, so just disable them
  gzip_disable "MSIE [1-6].(?!.*SV1)";

  # Send along useful info to the mongrels
  proxy_set_header X-Real-IP $remote_addr;
  proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
  proxy_set_header Host $http_host;
  proxy_redirect off;
  proxy_max_temp_file_size 0;

  ## Log Format
  log_format main '$remote_addr $host $remote_user [$time_local]
"$request" '
                    '$status $body_bytes_sent "$http_referer"
"$http_user_agent" "$gzip_ratio"';

  access_log /opt/nginx/logs/access.log main;

  # virtual hosting
  server {
    access_log /opt/nginx/logs/test_server.access.log main buffer=32k;
    error_log /opt/nginx/logs/test_server.error.log info;
    expires 6h;
    listen 80 default rcvbuf=64k backlog=128;
    root /opt/apps/website/public;
    server_name website;
    passenger_enabled on;

No matter what action I do, nginx seems to only render the cached page.
I've to refresh the page to see new changes, i.e. when I click signout,
I am still logged, but if I refresh the page its logs me out. I'm
guessing the problem has to do with rewrites. I've tried the below and
various others, but still nothing.

    if (-f $document_root/cache/$uri/index.html) {
      rewrite (.*) /cache/$1/index.html break;

    # pages like /about, cached with .html but accessed without
    if (-f $document_root/cache/$uri.html) {
      rewrite (.*) /cache/$1.html break;

    # pages like /api/v1/something.xml, cached as xml
    if (-f $document_root/cache/$uri) {
      rewrite (.*) /cache/$1 break;
Aeb1b044b20cf5de7028c1a456313e36?d=identicon&s=25 Senthil N. (senthilnambi)
on 2011-02-06 07:52
Turns out its the damn expires 6h line that's causing the trouble.
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