querystring.filtersep

STRINGquerystring.filtersep

Available in all subroutines.

Returns the separator needed by the querystring.filter and querystring.filter_except functions.

Example

set req.url = querystring.filter(req.url,
"utm_source" + querystring.filtersep() +
"utm_medium" + querystring.filtersep() +
"utm_campaign");

Try it out

querystring.filtersep is used in the following solution recipes, which show real world use cases. Click RUN to provision a Fastly service, execute the code on Fastly, and see how the function behaves.

Normalize requests

Improve cache performance by normalizing requests. Filter and reorder query params, convert to lowercase, filter headers, and more.

User contributed notes

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