From: Jason A. Donenfeld <Jason@zx2c4.com>
Date: Tue, 28 May 2013 14:33:30 +0000 (+0200)
Subject: cache: document negative ttls and add about ttl
X-Git-Url: https://gitweb.ps.run/ps-cgit/commitdiff_plain/61ff10065b579fa38182fcf10cc7e63839acd53c?hp=61ff10065b579fa38182fcf10cc7e63839acd53c

cache: document negative ttls and add about ttl

We've long supported negative ttls, for infinite cache, except the
documentation incorrectly showed one of our defaults as being 5 and not
-1. As well, with a negative ttl, we were actually making the HTTP
expired header go backwards. This changes it to go ahead ten years
instead.

Further, we add an cache-about-ttl option to set a different ttl for
about pages, which are now increasingly being filtered through markdown
or just sent statically anyway.

Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
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