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  1. #1
    Join Date
    Sep 2007
    Location
    Vijayawada
    Posts
    185

    Improving DNS resolution time

    Hi,
    What is the best way to reduce the delay in DNS resolution for vistors to our hosted domains?
    - Using multiple servers that spread across different geographic locations?
    - Writing a script that contacts major DNS servers and queries our domains, so that they keep this
    info in their cache?

    Pls share your ideas.
    TUXG Hosting - shared hosting simplified
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  2. #2
    Join Date
    Oct 2004
    Location
    Kerala, India
    Posts
    4,750
    DNS resolution depends on the nameservers that you use. Are you using private nameservers?
    David | www.cliffsupport.com
    Affordable Server Management Solutions sales AT cliffsupport DOT com
    CliffWebManager | Access WHM from iPhone and Android

  3. #3
    Join Date
    Sep 2007
    Location
    Vijayawada
    Posts
    185
    Yes, how does that matter?

    Our issue is not the performance of the dns server on our hosting server.
    We want to speed up the resolution time for our sites visitors (at their side) in some way. We know that we have to use caching dns or some other means, but client-side being beyond our control, we can't do much.

    Clients have to contact their ISP's dns servers normally, which in turn contact our dns server to get the ip addresses and caches the dns info locally,. Would it be better if we, in some way, make this caching happen at ISP DNS servers (without overloading them) using some mechanism?. Even if this is possible, which dns servers to choose and on what basis would be the next thing to consider. Hope i am clear enough.
    Last edited by tuxg; 04-01-2008 at 09:26 AM. Reason: rewording

  4. #4
    only thin, comes in my mind is increasing the TTL value, so that it will exist for some more time
    Web Hosting Gurus

  5. #5
    Join Date
    Feb 2004
    Posts
    634
    The easiest is probably going to be looking into an anycast DNS provider like DNSMadeEasy, UltraDNS, Akamai, etc., who have DNS servers located around the world.

  6. #6
    Join Date
    Sep 2007
    Location
    Vijayawada
    Posts
    185
    Thank you all for your advise.
    As supportmatrix has suggested, we will go ahead and increase the positive TTL of our dns zone records, and then as lockbull suggested, will look into how anycast DNS be utilized.

    Thanks again for your time.
    TUXG Hosting - shared hosting simplified
    Linux | BSD ~ Joomla | Drupal
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  7. #7
    Join Date
    Apr 2003
    Location
    Melbourne, AU
    Posts
    539
    Without using anycast, a possible optimization you can do is move your nameservers as close as possible to the majority of the visitors (i.e. for the greatest good).
    WK Woon
    CTO | http://www.aflexi.net - A flexible Network
    Building the next generation CDN platform - DEMO .... coming soon

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