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Expand Up @@ -40,9 +40,8 @@ When your content reaches our edge network, Cloudflare:
* The minimum length of a cache-tag is one byte.
* Individual tags do not have a maximum length, but the aggregate `Cache-Tag` HTTP header cannot exceed 16 KB after the header field name, which is approximately 1,000 unique tags. Length includes whitespace and commas but does not include the header field name.
* For cache purges, the maximum length of a cache-tag in an API call is 1,024 characters.
* The `Cache-Tag` HTTP header must only contain UTF-8 encoded characters.
* The `Cache-Tag` HTTP header must only contain ASCII encoded characters.
* Spaces are not allowed in cache-tags.
* Case is not sensitive. For example, `Tag1` and `tag1` are considered the same. Note that case insensitivity applies only for ASCII characters.

## Purge using cache-tags

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