SOLVED: How do I serve cache from a different file path?

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Carl Casbolt

• July 31, 2018 10:02

Hi,

I’m trying to create a configuration with the following logic:

visible to the web                origin server path

feeds.example.com          =>  origin-www.example.com/feed/default
feeds.example.com/news     =>  origin-www.example.com/feed/news
feeds.example.com/latest   =>  origin-www.example.com/feed/latest
feeds.example.com/maths    =>  origin-www.example.com/feed/tag/maths
feeds.example.com/science  =>  origin-www.example.com/feed/tag/science

Then anything else should redirect to the root “/” which maps to /feed/default on the origin.

Is this possible with Fastly?

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• 

  Andrew Betts

  • July 31, 2018 10:45

  Definitely. You can do this with a little VCL, our configuration language:

  if (req.url == "/") { set req.url = "/feed/default"; } else if (req.url == "/news") { set req.url = "/feed/news"; } ... etc ...

  If you had thousands of these, or you wanted to adjust them dynamically via API calls, I'd recommend looking at using an Edge dictionary.

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  Carl Casbolt

  • July 31, 2018 13:28

  Thanks for the advice, I've added a custom VCL like this:

  sub vcl_recv {
  #FASTLY recv
  
    if (req.url == "/") {
      set req.url = "/feed/default";
    } else if (req.url == "/news") {
      set req.url = "/feed/news";
    } else {
      set req.url = "/feed/default";
    }
  }
  

  I added the final else block to catch any other URLs that might hit the address.

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