isaacs/node — comment on commit bc1b80b2b0fcffd9546dcf24150f478e7cf35d41
File: doc/api/dns.markdown line 3
By bnoordhuis:

There are long outstanding feature requests for an application-local DNS cache which, if added, may conceivably require API changes (things like flushing the cache, side-stepping it for a single lookup, etc.).