nginx.conf

if ($repositories ~ "^$") {
    set $repositories "$ximera/repositories";
}

gzip on;
gzip_disable "msie6";
gzip_vary on;
gzip_proxied any;
gzip_comp_level 6;
gzip_buffers 16 8k;
gzip_http_version 1.1;
gzip_min_length 256;
gzip_types text/plain text/html application/html text/css application/javascript application/json application/x-javascript text/xml application/xml application/xml+rss text/javascript application/vnd.ms-fontobject application/x-font-ttf font/opentype image/svg+xml image/x-icon;

# An git object is immutable
location ~ '^/[A-z0-9]+\.git/objects/[0-9a-f]{2}/[0-9a-f]{38}$' {
  access_log off;
  root $repositories;    
  add_header Cache-Control "public";
  expires 1y;
}

# A pack file is immutable after creation
location ~ '^/[A-z0-9]+\.git/objects/pack/pack-[0-9a-f]{40}.(pack|idx)$' {
  access_log off;
  root $repositories;        
  add_header Cache-Control "public";
  expires 1y;  
}

# But information about packfiles is not...
location ~ '^/[A-z0-9]+\.git/objects/info/packs$' {
  access_log off;
  root $repositories;
  add_header Cache-Control "no-cache";
}

# The HEAD ref could change.
location ~ '^/[A-z0-9]+\.git/HEAD$' {
  access_log off;
  root $repositories;    
  add_header Cache-Control "no-cache";
  expires 1y;  
}

# This is a bit annoying; nginx won't match on querystrings, so we
# use an unused code (419) to control flow.  We can handle
# git-upload-pack and the "empty" git service with the dumb
# protocol, so let's do that.  We reduce load on our node app, at
# the price of slower cloning.
location ~ '^(/[A-z0-9]+\.git/info/refs)$' {
  error_page 419 = @gitUploadPack;
  access_log off;
  if ( $args ~ "service=git-upload-pack" ) { return 419; }
  if ( $args = "" ) { return 419; }
  
  # this is needed for the smart git protocol
  client_max_body_size 0;
  
  proxy_pass  http://node;
  proxy_next_upstream error timeout invalid_header http_500 http_502 http_503 http_504;
  proxy_redirect off;
  proxy_buffering on;
}

location @gitUploadPack {
  root $repositories;
  add_header Cache-Control "no-cache";
  access_log off;    
}

location ^~ /public {
  root $ximera;
  access_log off;
  add_header Cache-Control "public";
  expires 1d;

  location ~ '/public/v[0-9]+\.[0-9]+\.[0-9]+/(.*)$' {
    root $ximera;
    expires 1y;
    try_files /public/$1 =404;  
  }
}


location ^~ /node_modules {
  root $ximera;
  access_log off;
  add_header Cache-Control "public";
  expires 1d;

  location ~ '/node_modules/v[0-9]+\.[0-9]+\.[0-9]+/(.*)$' {
    root $ximera;
    expires 1y;
    try_files /node_modules/$1 =404;  
  }
}

# send the request to our app server
location / {
  proxy_pass  http://node;
  proxy_next_upstream error timeout invalid_header http_500 http_502 http_503 http_504;
  proxy_redirect off;
  
  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_set_header        X-NginX-Proxy true;

  proxy_http_version 1.1;

  # This is required for websockets to work?
  proxy_set_header Upgrade $http_upgrade;
  proxy_set_header Connection 'upgrade';
  proxy_set_header Host $host;
  proxy_cache_bypass $http_upgrade;

  # Our node server can be slow, so buffering shold help
  proxy_buffering on;
  proxy_buffer_size 128k;
  proxy_buffers 4 256k;
  proxy_busy_buffers_size 256k;
}