# Varnish & Full-Page Caches

Nosto for Magento works out of the box with the [Varnish support in Magento 2](http://devdocs.magento.com/guides/v2.3/config-guide/varnish/config-varnish.html).

Nosto adds query parameters to the product URLs for tracking purposes. You may encounter a cache-miss when query parameters are appended to the URL. We recommend [modifying your VCL definition to automatically strip out the query parameters added by Nosto](https://help.nosto.com/manuals/how-can-i-exclude-the-nosto-query-parameter-from-my-varnish-vcl-rules).


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# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://docs.nosto.com/magento-2/guides/varnish-and-full-page-caches.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.