DNS caching for empty responses causes unnecessary upstream resolution
DNS caching for empty responses causes unnecessary upstream resolution: a task in LegoFlow-SWE (Harbor dataset). When a client requests multiple record types for a domain where not all types exist, the absence of a record type triggers repeated upstream resolution instead of being served from…
The task
When a client requests multiple record types for a domain where not all types exist, the absence of a record type triggers repeated upstream resolution instead of being served from cache. For example, a domain with only an A record: the A record is correctly cached and served, but every subsequent AAAA query for the…
Part of Lego-X/LegoFlow-SWE.