> ## Documentation Index
> Fetch the complete documentation index at: https://algolia.com/llms.txt
> Use this file to discover all available pages before exploring further.

# cache

> Turn crawler's cache on or off.

* **Type**: `object`

Caching can save bandwidth, as the crawler only crawls pages that changed since the last crawl.
With caching, the crawler makes [conditional requests](https://developer.mozilla.org/en-US/docs/Web/HTTP/Conditional_requests)

To do so,
it relies on the `ETag` and `Last-Modified` headers returned by your server during the previous crawl.
These values are included in subsequent requests as the `If-None-Match` and `If-Modified-Since` headers.

If your server responds with `304 Not Modified`,
the crawler doesn't download or parse the page again.
Instead, it reuses the existing records in your production index.
This means your index stays up to date while minimizing unnecessary data transfers.

The crawler doesn't send conditional requests:

* If your configuration changed since the last crawl
* If the [external data](/doc/tools/crawler/enriching-data/overview) associated with this page changed since the last crawl

## Examples

```js JavaScript icon=code theme={"system"}
{
  cache: {
    enabled: true;
  }
}
```

## Parameters

<ParamField body="enabled" type="boolean" default={true} required>
  Whether to turn on the cache.
</ParamField>