[PATCH 1 of 2] Cache: remove unused valid_msec fields

[Maxim Dounin]

Hello!

On Tue, Nov 18, 2014 at 05:15:48PM -0800, Piotr Sikora wrote:

> # HG changeset patch
> # User Piotr Sikora <piotr at cloudflare.com>
> # Date 1416359233 28800
> #      Tue Nov 18 17:07:13 2014 -0800
> # Node ID 99e65578bc80960b2fdf494e048678dd97bba029
> # Parent  2f7e557eab5b501ba71418febd3de9ef1c0ab4f1
> Cache: remove unused valid_msec fields.

I would rather not, for two reasons:

- I would actually like to see support for subsecond cache 
  validity times added eventually (unlikely to happen in the near 
  future, but still).  

- This implies cache file on-disk format change and invalidation 
  of all previously cached files, so shouldn't be done without 
  some serious enough reason.

-- 
Maxim Dounin
http://nginx.org/