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3938. [func] Added quotas to be used in recursive resolvers that are under high query load for names in zones 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. See the ARM for details of these options. [RT #37125] |
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| .. | ||
| include | ||
| win32 | ||
| aclconf.c | ||
| api | ||
| dnsconf.c | ||
| log.c | ||
| Makefile.in | ||
| namedconf.c | ||
| parser.c | ||
| version.c | ||