Nginx Caching Error Response Code like 400 , 500 , 503 ,etc

[Valentin V. Bartenev]

On Sunday 07 August 2016 08:43:04 anish10dec wrote:
> Hi Everyone, 
> 
> We are using Nginx as Caching Server . 
> 
> As per Nginx Documentation by default nginx caches 200, 301 & 302 response
> code but we are observing that if Upstream server gives error 400 or 500 or
> 503, etc , response is getting cached and all other requests for same file
> becomes HIT. 
[..]

No, the nginx documentation doesn't say this.

A quote from the docs:

 | Parameters of caching can also be set directly in the response header.
 | This has higher priority than setting of caching time using the directive. 

The "200, 301 & 302" codes are mentioned in the "proxy_cache_valid"
directive when only the "time" parameter is specified.

http://nginx.org/r/proxy_cache_valid

  wbr, Valentin V. Bartenev