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Adds info about client side range request #23310

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Merged
merged 4 commits into from
Jul 3, 2025
Merged

Adds info about client side range request #23310

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Adds info about client side range request
angelampcosta Jun 30, 2025
b61288a
Update src/content/docs/cache/concepts/default-cache-behavior.mdx
angelampcosta Jun 30, 2025
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angelampcosta Jun 30, 2025
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Update src/content/docs/cache/concepts/default-cache-behavior.mdx
angelampcosta Jul 3, 2025
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7 changes: 7 additions & 0 deletions src/content/docs/cache/concepts/default-cache-behavior.mdx
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Expand Up @@ -29,6 +29,13 @@ If both `max-age` and an `Expires` header are set, `max-age` will be used by Clo

When [Origin Cache Control](/cache/concepts/cache-control/) is enabled on an Enterprise customer’s website, it indicates that Cloudflare should strictly respect `Cache-Control` directives received from the origin server. Free, Pro and Business customers have this feature enabled by default. For a list of directives and behaviors when Origin Cache-Control is enabled or disabled, refer to [Cache-Control directives](/cache/concepts/cache-control/#cache-control-directives).

## Client side range requests

Clients can send range requests to be served from the cache. For a cacheable request:

- If the origin response includes a `Content-Length` header, then the specified byte range will be returned with an HTTP 206 response.
- If the origin response does not include the `Content-Length` header, the cache will return the full content with an HTTP 200 response.

## Default cached file extensions

Cloudflare only caches based on file extension and not by MIME type. The Cloudflare CDN does not cache HTML or JSON by default. Additionally, by default Cloudflare caches a website's robots.txt.
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