How to Purge cach of 502 and 504's

Hi All,

I am using nginx as a reverse proxy and have configured it to cache 502
using proxy_cache_valid 502 30m; This is working fine, but my question
is
how do I purge these from the cache if required?

There is no matching file in the proxy_cache_path to delete, so it
appears
the Nginx caches these in memory. Restarting Nginx certainly clears
these
cached results but I need to avoid restarting as I have Websocket
connections I want to avoid dropping.

I can disable caching using proxy_no_cache and proxy_cache_bypass and
reload, then wait for the cached entries to time out. That seems to work
but
I wanted to ask if there is a simple one hit solution to empty any
cached
results.

Kind Regards,

Warren.

Posted at Nginx Forum:
http://forum.nginx.org/read.php?2,248506,248506#msg-248506

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