From: Evan Hunt Date: Mon, 3 Aug 2015 19:48:05 +0000 (-0700) Subject: [master] add fetchlimit to README X-Git-Tag: v9.11.0a1~616 X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=53b5a0377d08626553f3d581e821f29da44c0a88;p=thirdparty%2Fbind9.git [master] add fetchlimit to README --- diff --git a/README b/README index 781bb2d468d..67982136e21 100644 --- a/README +++ b/README @@ -56,6 +56,21 @@ BIND 9.11.0 BIND 9.11.0 includes a number of changes from BIND 9.10 and earlier releases. New features include: + - New "fetchlimit" quotas are now available for the use of + recursive resolvers that are are under high query load for + domains whose authoritative servers are nonresponsive or are + experiencing a denial of service attack: + + "fetches-per-server" limits the number of simultaneous queries + that can be sent to any single authoritative server. The + configured value is a starting point; it is automatically + adjusted downward if the server is partially or completely + non-responsive. The algorithm used to adjust the quota can be + configured via the "fetch-quota-params" option. + + "fetches-per-zone" limits the number of simultaneous queries + that can be sent for names within a single domain. (Note: + Unlike "fetches-per-server", this value is not self-tuning.) + + New stats counters have been added to count + queries spilled due to these quotas. - The zone serial number of a dynamically updatable zone can now be set via "rndc signing -serial ". This allows inline-signing zones to be set to a specific