Nginx error_page with proxy and memcached

Today I was trying to setup a custom error_page on my nginx server and I had some hard time trying to make it work so here’s what I’ve learned.

When serving static files or have the simplest upstream configuration I could just easily set error_page and everything should work like its supposed to, like this:

But when you make use of error_page as a way to redirect requests to a upstream server it does not work like expected. It’s a common setup when you use memcached inside nginx to cache your pages like I do.

That does not work because nginx does not use error_page recursively by default. If the request comes from a error_page (like 404 on my example), nginx ignores every other error_page setting. So the only thing you should do is to set recursive_error_pages on and everything works like a charm:

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