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ccot
Asked: 2012-06-06 07:05:19 +0800 CST

DNS caching "-Dsun.net.inetaddr.ttl=30" in glassfish v3?

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Excuse my basic question, but i am a software engineer and not very experienced with server admin.

I am using reCAPTCHA in my j2ee application, and on google's site they say that the reCAPTCHA plugin for java requires modifying DNS caching (put it 30 seconds).
This is mentioned in the following Link (at the bottom of the page "-Dsun.net.inetaddr.ttl=30")

How can i set it up in glassfish v3?

java domain-name-system glassfish

1 Answers

  1. Best Answer

    You can setup the JVM settings for your domain doing the following:

    1. open glassfish admin console (by default it would be on port 4848)
    2. go to Configuration -> JVM Settings
    3. choose JVM Options tab
    4. add your JVM option
    5. stop and start glassfish domain

    You could also use asadmin on the commandline, something like:

    asadmin create-jvm-options -Dsun.net.inetaddr.ttl=30
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