I suppose you are talking about the proxy_cache_path directive. Its docs
<http://nginx.org/en/docs/http/ngx_http_proxy_module.html#proxy_cache_path>
state you are defining the size of a *shared memory zone*, most probably
allocated by the master process at configuration loading time and then
accessible/accessed by workers when needed.

You will be able to make a conclusion by yourself. :o)
---
*B. R.*

On Sat, Mar 19, 2016 at 10:02 PM, CJ Ess <zxcvbn4038@gmail.com> wrote:

> The value I specify for the size of my key zone in the proxy_path
> statement - is that a per-worker memory allocation or a shared memory zone?
> (i.e. if its 64mb and I have 32 processors, does the zone consume 64mb of
> main memory or 2gb?)
>
>
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