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Available inall subroutines.

Returns true if the key key has an entry in the table id.

Example

Here's one way of implementing a simple redirect mechanism, conditional on presence in a table of URLs:

table redirects {
  "/a": "/xyz",
  "/b": "/abc",
}

sub vcl_recv {
  if (table.contains(redirects, req.url.path)) {
    error 800 "redirect";
  }

  ...
}

sub vcl_deliver {
  set resp.http.location = table.lookup(redirects, req.url.path)
    + if(req.url.qs == "", "", "?" + req.url.qs);
  set resp.status = 301;
}

Try it out

table.contains is used in the following code examples. Examples apply VCL to real-world use cases and can be deployed as they are, or adapted for your own service. See the full list of code examples for more inspiration.

Click RUN on a sample below to provision a Fastly service, execute the code on Fastly, and see how the function behaves.