what a worker does?

[Marcos Neves]

Hi,

I need some help to fully understand what´s a worker is.
For example, if I have only one worker, and run a long request, like a
file download/upload or a long running proxy script like php or rails.
Will this block the server, so it can´t serve other client until de
request finish?

And what for worker_connections?

I´m trying to understand the request flow on nginx, so I can optimize
it the right way.

-- 
Marcos Neves
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