DNS Cache In Glassfish 3.1.1
The performance tuning guide in glassfish 3.1.1 documentation states that the DNS (domain name server) is enabled by enabling the DNS lookup option. Below are some doubts/queries I have on this topic
1. The guide mentions that the DNS statistics are displayed on the monitoring page. I enabled the DNS lookup option but couldn't see the DNS statistics page under Monitor tab of the admin console. Where can I see the statistics?
2. The guide mentions that the DNS entries are stored in the file cache. Isn't the file cache used to cache static content which I assume are images, js, css files etc?
3. It also mentions about limit DNS lookups to asynchronous. What does asynchronous DNS lookup mean and how can this configuration be done?