rm-hull / dot-block / 30591325682

68%

Build Type

push

github

Committed by web-flow

Commit Message

fix: cache negative DNS responses (NODATA and NXDOMAIN) to prevent repeated upstream queries (#259)

* fix(forwarder): support negative caching for NXDOMAIN and NODATA

Implement negative caching in the DNS dispatcher to cache `NXDOMAIN`
(storing the SOA record as a marker) and `NODATA` (empty answer slice
for `NOERROR`) responses, preventing repeated upstream queries for
non-existent domains and records.

* test(forwarder): fix race conditions in dispatcher tests

Enable the race detector in test documentation and use atomic operations
for upstream call counters in concurrent dispatcher cache tests.

Coverage Stats

47 of 54 new or added lines in 1 file covered. (87.04%)

48 existing lines in 1 file now uncovered.

2177 of 3230 relevant lines covered (67.4%)

576.38 hits per line