Reverse Proxy on a Lotus Domino Server

I don't think that there is a way to explicitly invalidate cached items, but here is an example of how to do the rest. Update: As mentioned by Piotr in another answer, there is a cache purge module that you can use. You can also force a refresh of a cached item using nginx's proxy_cache_bypass - see Cherian's answer for more information.

In this configuration, items that aren't cached will be retrieved from example.net and stored. The cached versions will be served up to future clients until they are no longer valid (60 minutes).

Your Cache-Control and Expires HTTP headers will be honored, so if you want to explicitly set an expiration date, you can do that by setting the correct headers in whatever you are proxying to.

There are lots of parameters that you can tune - see the nginx Proxy module documentation for more information about all of this including details on the meaning of the different settings/parameters: http://nginx.org/r/proxy_cache_path

http {
  proxy_cache_path  /var/www/cache levels=1:2 keys_zone=my-cache:8m max_size=1000m inactive=600m;
  proxy_temp_path /var/www/cache/tmp; 


  server {
    location / {
      proxy_pass http://example.net;
      proxy_cache my-cache;
      proxy_cache_valid  200 302  60m;
      proxy_cache_valid  404      1m;
    }
  }
}

For IIS 7.5, Microsoft provides official modules for this!

• URL Rewrite: http://www.iis.net/download/URLRewrite
• Reverse proxy: http://www.iis.net/download/ApplicationRequestRouting

In the site settings, you'll get an "URL Rewrite" icon.

• Open it
• right click on the "inbound rules list"
• Select "Add Rule(s)"
• Choose "Reverse proxy"

In this dialog you can enter the hostname + port to forward to. After adding the rule, opening the edit dialog offers more customizations.