- 🇺🇸United States luke.leber Pennsylvania
Given the response header limitation for Cloudflare may have increased, it's very likely that upstreams will start hitting resource limitations now.
Acquia is now capped at 8kb for their Cloud Next platform.
https://docs.acquia.com/acquia-cloud-platform/known-issues-cloud-next#se...
I think this almost has to be user-configurable (and enforced?) given all hosting is not equal.
- 🇺🇸United States luke.leber Pennsylvania
A bit more info on Acquia Cloud Next here.
Individual response headers are indeed limited to 8kb and exceeding this limit results in an immediate white screen of death. ☠️
When splitting things into multiple headers, it appears that Acquia's infrastructure does not fail, but instead collapses the headers into a single one, comma-separating the values.
For example:
Cache-Tags: ...almost 8k of them, abcd
Cache-Tags: dcba, ...the restIs transformed into
Cache-Tags: ...almost 8k of them, abce, dcba, ...the rest
I don't know if this behavior is completely kosher with an RFC or not.
Furthermore, the individual header limit on ACN seems to be slightly less than the advertised 8k. Casual testing indicates that things start failing at 8188 bytes. 🤷