querystring.set
Available inall subroutines.
Returns the given URL with the given parameter name
set to the given value
,
replacing the original value and removing any duplicates. If the parameter
is not present in the query string, the parameter will be appended with
the given value to the end of the query string. The parameter name
and value
will be URL-encoded when set in the query string.
Example
set req.url = querystring.set(req.url, "foo", "baz");
Try it out
querystring.set
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.
Normalize requests to increase cache efficiency
Improve cache performance by normalizing requests. Filter and reorder query params, convert to lowercase, filter headers, and more.