Hello! On Wed, Oct 02, 2013 at 10:04:23AM -0400, amehzenin wrote:
> Hello. > > Consider the following situation: you are deploying application that can > serve 1 req./sec. What would happen if I send 10 request in 1 second? I > wrote simple app to test that: > https://github.com/amezhenin/nginx_slow_upstream . > This test shows that your requests will be served _in_exact_same_order_ > they were sent. > > For now, this looks like Nginx have some kind of queue for requests, but my > colleague(administrator) sayd that there is no any queues in Nginx. So I > wrote another question about epoll here: > http://stackoverflow.com/questions/19114001/does-epoll-preserve-the-order-in-which-fds-was-registered > . From that discussion I figured that epoll does preserves the order of > requests. > > I have two questions: > 1) Is there any mistakes in reasoning/code above? > 2) Does Nginx have some sort of queue for requests on top of epoll? Or Nginx > uses pure epoll functionality? There is no queue in nginx, but there is queue in a listen socket of your backend app. It's called "listen queue" or "backlog" and likely it's what preserves a request order for you. -- Maxim Dounin http://nginx.org/en/donation.html _______________________________________________ nginx mailing list [email protected] http://mailman.nginx.org/mailman/listinfo/nginx
