Pull request: Configuration: imp optimistic doc

Merge in DNS/adguard-home-wiki from optimistic-ttl to master

Squashed commit of the following:

commit 251e3d0a8a899c9a165888ebf0976d0a8d86fb04
Author: Eugene Burkov <E.Burkov@AdGuard.COM>
Date:   Wed Mar 9 19:10:33 2022 +0500

    Configuration: fix version

commit 310ddd69d4d279268da9cf0a91546973fa797de9
Author: Eugene Burkov <E.Burkov@AdGuard.COM>
Date:   Wed Mar 9 18:45:47 2022 +0500

    Configuration: imp optimistic doc
Eugene Burkov 2022-03-09 17:15:04 +03:00
parent efa83309ef
commit 6044426a6d

@ -406,7 +406,8 @@ Settings are stored in [YAML format](https://en.wikipedia.org/wiki/YAML), possib
Must be greater than or equal to `cache_ttl_min`.
- `cache_optimistic` (**since v0.107.0**) — Make AdGuard Home respond from
the cache even when the entries are expired and also try to refresh them.
The TTL for such responses is 60 seconds.
Before **v0.108.0-b.5** the TTL for such responses is 60 seconds and since
**v0.108.0-b.5** it's 10 seconds.
- **Other settings**
- `bogus_nxdomain` - Respond with `NXDOMAIN` instead of any response having
IP addresses matching the ones from this list. **Since v0.108.0** it also