Why BootDev — Nginx Config

We had spent many effort on Nginx configuration. Different with Apache + mod_php5, Nginx + php_fpm need much detail configuration and nginx is Drupal module dependent. It means some Drupal module require support from Nginx configuration. Like CDN module / Advagg module.

There is a github about Drupal + Nginx, but that will be too much and you will require to filter the necessary part in your project.

Here i share the main nginx configure

server {
  server_name *.compute.amazonaws.com;
  root   /opt/source/app;
  access_log  /var/log/nginx/access.log;
  error_log  /var/log/nginx/error.log;

  #include /etc/nginx/apps/drupal/drupal.conf;
  #Cache everything by default
  set $no_cache 0;
  #Don't cache POST requests
  if ($request_method = POST)
  {
    set $no_cache 1;
  }

  #Don't cache if the URL contains a query string
  if ($query_string != "")
  {    
    set $no_cache 1;
  }

  #Don't cache the following URLs
  if ($request_uri ~* "/(administrator/|login.php)")
  {
    set $no_cache 1;
  }

  #Don't cache if there is a cookie called PHPSESSID
  if ($http_cookie = "PHPSESSID")
  {
    set $no_cache 1;
  }

  # Enable compression, this will help if you have for instance advagg module
  # by serving Gzip versions of the files.
  gzip_static on;

  location = /favicon.ico {
    log_not_found off;
    access_log off;
  }

  location = /robots.txt {
    allow all;
    log_not_found off;
    access_log off;
  }

  # This matters if you use drush
  location = /backup {
    deny all;
  }

  # Very rarely should these ever be accessed outside of your lan
  location ~* \.(txt|log)$ {
    deny all;
  }

  location ~ \..*/.*\.php$ {
    return 403;
  }

  location / {
    # This is cool because no php is touched for static content
    try_files $uri @rewrite;
  }

  location @rewrite {
    # Some modules enforce no slash (/) at the end of the URL
    # Else this rewrite block wouldn't be needed (GlobalRedirect)
    rewrite ^/(.*)$ /index.php?q=$1;
  }

  location ~ \.php$ {
    fastcgi_split_path_info ^(.+\.php)(/.+)$;
    #NOTE: You should have "cgi.fix_pathinfo = 0;" in php.ini
    include fastcgi_params;
    fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
    fastcgi_intercept_errors on;
    fastcgi_pass unix:/var/run/php-fpm-www.sock;
    fastcgi_read_timeout 40;
    fastcgi_cache MYAPP;
    fastcgi_cache_valid 200 301 30s;
    fastcgi_cache_bypass $no_cache;
    fastcgi_no_cache $no_cache;

    # Set cache key to include identifying components
    fastcgi_cache_valid 302     1m;
    fastcgi_cache_valid 404     1s;
    fastcgi_cache_min_uses 1;
    fastcgi_cache_use_stale error timeout invalid_header updating http_500;
    fastcgi_ignore_headers Cache-Control Expires;
    fastcgi_pass_header Set-Cookie;
    fastcgi_pass_header Cookie;

    ## Add a cache miss/hit status header.
    add_header X-Micro-Cache $upstream_cache_status;

    ## To avoid any interaction with the cache control headers we expire
    ## everything on this location immediately.
    expires epoch;

    ## Cache locking mechanism for protecting the backend of too many
    ## simultaneous requests.
    fastcgi_cache_lock on;
  }

  # Catch image styles for D7.
  location ~ ^/sites/.*/files/ {
    try_files $uri @rewrite;
  }

  # Catch image styles for AmazonS3 D7.
  location ~ ^/system/files/styles/ {
    try_files $uri @rewrite;
  }

  location ~* \.(js|css|png|jpg|jpeg|gif|ico|svg)$ {
    expires max;
    log_not_found off;
  }

  location ~* \.(eot|ttf|woff|svg) {
    add_header Access-Control-Allow-Origin *;
    try_files $uri @rewrite;
  }

  ##   
  # Advanced Aggregation module CSS
  ##   
  # http://drupal.org/project/advagg.
  ##    
  location ^~ /sites/default/files/advagg_css/ {
    expires max;
    add_header ETag '';
    add_header Last-Modified 'Wed, 20 Jan 1988 04:20:42 GMT';
    add_header Accept-Ranges '';
    add_header Access-Control-Allow-Origin *;
    
    location ~* /sites/default/files/advagg_css/css__[[:alnum:]-_]+\.css$ {
      access_log off;
      try_files $uri @drupal;
    }
  }

  ###
  ### CDN Far Future expiration support.
  ###
  location ^~ /cdn/farfuture/ {
    tcp_nodelay   off;
    access_log    off;
    log_not_found off;
    etag          off;
    gzip_http_version 1.0;
    if_modified_since exact;
    location ~* ^/cdn/farfuture/.+\.(?:css|js|jpe?g|gif|png|ico|bmp|svg|swf|pdf|docx?|xlsx?|pptx?|tiff?|txt|rtf|class|otf|ttf|woff|eot|less)$ {
      expires max;
      add_header X-Header "CDN Far Future Generator 1.0";
      add_header Cache-Control "no-transform, public";
      add_header Last-Modified "Wed, 20 Jan 1988 04:20:42 GMT";
      rewrite ^/cdn/farfuture/[^/]+/[^/]+/(.+)$ /$1 break;
      try_files $uri @nobots;
    }
    location ~* ^/cdn/farfuture/ {
      expires epoch;
      add_header X-Header "CDN Far Future Generator 1.1";
      add_header Cache-Control "private, must-revalidate, proxy-revalidate";
      rewrite ^/cdn/farfuture/[^/]+/[^/]+/(.+)$ /$1 break;
      try_files $uri @nobots;
    }
    try_files $uri @nobots;
  }

}

The idea of this config file is to support CDN far future, CDN, advagg, Drupal image styling, AmazonS3 and microcache modules. You need to catch different url pattern for different purpose.

For microcache, we put the cache into memory and expire every 30s, so that in each 30s, only the 1st visitor hit your site will generate by PHP. 2nd – N users will hit microcahe. In this approach, we can support high traffic website and then same time avoid handling cache invalidation problem.

Here I also share the cache config which we put nginx cache into memory which release better performance.

fastcgi_cache_path /dev/shm/microcache levels=1:2 keys_zone=MYAPP:5M max_size=256M inactive=2h;
fastcgi_cache_key "$scheme$request_method$host$request_uri";
add_header X-Cache $upstream_cache_status;
map $http_cookie $cache_uid {
  default nil; # hommage to Lisp :)
  ~SESS[[:alnum:]]+=(?<session_id>[[:alnum:]]+) $session_id;
}
map $request_method $no_cache {
  default 1;
  HEAD 0;
  GET 0;
}

You can read the comment inside the config file for more detail explanation.

This config requires to work with another PHP-FPM config, so that the memory is optimized. Then, you can estimate how many request per second that your server can serve. And i will talk about it next time.

One thought on “Why BootDev — Nginx Config

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