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This is a discussion on The DIGG Effect in the Hosting Talk & Chit-chat forum
I'm sure some of you here would know what the " Digg Effect " is . My question is, and hopefully someone from HZ can ...

  1. #1
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    The DIGG Effect

    I'm sure some of you here would know what the "Digg Effect" is.

    My question is, and hopefully someone from HZ can answer this. If a site gets dugg on HZ, what is the most likely thing to happen? Will the HZ servers be able to handle the load, or will the account be suspended before the digg effect has its chance to take its toll?

  2. #2
    Jag Veteran
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    Depends on the amount of incoming traffic. Getting Digg'ed is sort of like a small DDoS attack. There are so many incoming connections to the domain that it causes the server load to spike and on our end all we see is lots of connections from lots of ip's to the same domain which looks like an attack. We try to let it out or block as many of the ip's as possible so that the site stays online w/o us having to firewall the destination ip. There really isn't anything that you can do instantaneously to keep the site online while it's getting hammered on a shared server. There is the option of moving the domain temporarily but then that requires a file transfer, dns edit which may not be affective at all. Some sites take hours to transfer and then you have to deal with dns cache.

    The question is how do you keep the website online while at the same time maintaining a low enough server load where sites will still be reachable and not time out. It's not possible to allow the huge amounts of incoming connection while keep the server load low. The other option is to limit the amount of incoming connections to a domain so that the site stays online while server load is low enough to allow those connected to be able to view the site. You'll end up turning away visitors past the limit but at least you'll still get visitors to your site and not just have it shut down completely. Those turned away will see an error message telling them the amount of connections is exceeded and to check back shortly. We are currently running this on a few of our servers for testing.
    Kiet Duong
    Hosting Zoom, Inc.

  3. #3
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    wow this is great to know..be cautious

  4. #4
    Loyal Client ivanstorck's Avatar
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    Has anyone used any automated load testing tools? I would like to know where exactly the line can be drawn for one wordpress site that I have that will be on the Today show one morning in April soon. Can anyone offer suggestions of open source tools? (Mac/Linux or Windows)

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    Ivan, I don't know about load testing tools, but it would probably be sensible to install something like WP SuperCache http://ocaoimh.ie/wp-super-cache/
    which generates HTML pages and serves them to users who haven't logged in or commented.

  6. #6
    Dylan
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    Quote Originally Posted by lxcoza View Post
    Ivan, I don't know about load testing tools, but it would probably be sensible to install something like WP SuperCache http://ocaoimh.ie/wp-super-cache/
    which generates HTML pages and serves them to users who haven't logged in or commented.
    Nice one. Sounds like a good, effective script. Thanks for that.

  7. #7
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    You might also want to investigate something like Coral (http://www.coralcdn.org/) if you are anticipating the Digg effect for some reason. The best way to deal with surges in hits on static pages is to distribute the load around the world. Coral is free, well tested and has withstood hundreds if not thousands of Digg effect surges.

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