More Proxy Actions

In addition to the proxy actions described in Proxy Request URI Actions and Proxy Request Header Actions, OpenResty Edge also provides more proxy actions.

# Enable Proxy Cache Revalidate

This action is used to enable: the revalidation of expired cached items using conditional requests with “If-Modified-Since” and “If-None-Match” header fields.

# Use Stale Proxy Cache

This action is used to determine the circumstances under which stale cached responses can be used in communication with the proxy server. For example, when a 504 error occurs on a request, the old cache is used for the response.