Java's DNS cache

Thread view:

EricF - 21 Dec 2005 04:13 GMT

The morning started with a too early morning call - my application's reverse
DNS lookups were all failing. There was a network "hiccup" the night before.
We ended up restarting the server and everything was fine.

It turns out that Java by default caches all failed DNS lookups with no
expiration. I think this is a very bad idea.

I came across this blog while researching the issue ...

http://www.burnthacker.com/articles/search?q=dns

Eric

Reply to this Message

Roedy Green - 21 Dec 2005 07:40 GMT

>I came across this blog while researching the issue ...
>
>http://www.burnthacker.com/articles/search?q=dns

I think that is out of date. the failed cache DNS lookup defaults to
10 seconds now.

Signature

Canadian Mind Products, Roedy Green.
http://mindprod.com Java custom programming, consulting and coaching.

Reply to this Message

Free Magazines

Get these publications absolutely FREE for up to 12 months. There are no hidden fees and no obligation. Simply choose a title, complete the application form and submit it. Read more ...