Carlos E. R. wrote:
On 2014-07-15 12:35, Per Jessen wrote:
Carlos E. R. wrote:
But the nameserver is mine, in this machine. Should it not cache?
Yes, it should. You can verify it with dig - pick something you have never looked up, maybe "www.tagi.ch" - on the first dig, you see a TTL of 900, on subsequent digs, you should see the TTL decreasing.
True.
;; Query time: 157 msec
...
;; Query time: 0 msec
But if I ask for "telefonica.es" it takes 88 ms, when that address was used less than an hour ago, maybe minutes. Supposedly the sites (not me) define how long to cache an address.
Yes, that is the TTL = Time-To-Live. You see it in every dig. dig telefonica.es ; <<>> DiG 9.4.1-P1 <<>> telefonica.es ;; global options: printcmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 41475 ;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 2, ADDITIONAL: 2 ;; QUESTION SECTION: ;telefonica.es. IN A ;; ANSWER SECTION: telefonica.es. 300 IN A 194.224.58.10 ^^^ TTL = 5 minutes. -- Per Jessen, Zürich (18.6°C) http://www.dns24.ch/ - your free DNS host, made in Switzerland. -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse+owner@opensuse.org