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GTM

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by

Russell Wiegand

on 15 November 2011

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Transcript of GTM

DNS turns a name into an IP address. What if I have more than one ? DNS really only looks up values in a database.
We can define multiple values. Multiple addresses instead of:


we can have: www.example.com A 192.0.32.10



www.example.com. A 192.0.32.10
www.example.com. A 192.0.32.11 This is useful if we have two web servers, and want to split the load between them. Instead of always replying with 192.0.32.10 as the answer for www.example.com, the server can now alternate between 192.0.32.10 and 192.0.32.11. This is called round-robin load balancing. Each answer will be given out half of the time. Limitations of
Round Robin What if our servers can handle different loads? Too bad. Each gets half the traffic. Enter the GTM GTM can distribute at a definable ratio.


GTM can check server status.


GTM can respond with the best performing server.


GTM can be configured for failover. What if one server is primary and the other is a backup? What if I have a better network connection to one server? What happens if one of our servers is down? What if our servers can handle different loads? What if one server is primary and the other is a backup? What if I have a better network connection to one server? What happens if one of our servers is down? No problem! GTM can do that! GTM Global Traffic Manager Datacenter Affinity Connect to a server located "close" to me, because it will provide better performance than sending my network traffic across the country.
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