218 This is fine
HTTP response status code 218 This is fine is an unofficial, community-driven status code not part of any standard or specification. The name references the popular "This is Fine" internet meme, a comic strip by KC Green depicting a dog sitting in a burning room, calmly stating "This is fine."
Origin
The 218 This is fine status code is widely
attributed to the Apache HTTP Server and its
ProxyErrorOverride directive. The association
between 218 This is fine and Apache appears to
have originated from an unsourced addition to
Wikipedia, subsequently picked up by various HTTP
reference sites, creating a circular chain of
citations.
Usage
Despite the lack of a formal definition, 218 This is fine has gained recognition in the developer community as a humorous, informal status code. The HTTP specification allows servers to return any three-digit status code, so any web server or application is free to respond with 218 This is fine as a custom code.
In practice, some developers use this code to signal a non-critical issue while the server continues to operate normally. The semantic meaning aligns with the meme: acknowledging a problem while proceeding as if everything is acceptable.
The ProxyErrorOverride directive in Apache does
exist and controls how Apache handles error
responses (4xx and
5xx) from backend
servers when
acting as a reverse proxy. When enabled, Apache
replaces these error responses with locally defined
ErrorDocument pages. This mechanism does not involve
status code 218 This is fine in any version of
Apache httpd.
Takeaway
HTTP response status code 218 This is fine is an
unofficial, community-adopted code with no formal
implementation in any major web server. While widely
associated with Apache and ProxyErrorOverride,
this attribution is not verifiable in Apache's
source code or documentation. The code remains a
recognized part of HTTP folklore, used informally by
developers, inspired by the "This is Fine" internet
meme.
