1.9.13 and non_idempotent
mdounin at mdounin.ru
Fri Apr 1 03:31:30 UTC 2016
On Thu, Mar 31, 2016 at 07:46:40PM -0700, Frank Liu wrote:
> Does that mean by default if one upstream server is down (connect error or
> connect timeout), nginx won't try the next server and POST request will
> just fail?
No. Quoting CHANGES (http://nginx.org/en/CHANGES):
*) Change: non-idempotent requests (POST, LOCK, PATCH) are no longer
passed to the next server by default if a request has been sent to a
backend; the "non_idempotent" parameter of the "proxy_next_upstream"
directive explicitly allows retrying such requests.
Connect errors doesn't imply that a request has been sent to a
backend. As long a request hasn't been sent yet, it can be
retried to another server without any problems.
See docs here for more details:
More information about the nginx