Setting Up A High-Availability Load Balancer With HAProxy/Wackamole/SpreadJan 09, 2009, 07:33 (0 Talkback[s])
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[ Thanks to Falko Timme for this link. ]
"Not only does the load balancer distribute the requests to the two backend Apache servers, it also checks the health of the backend servers. If one of them is down, all requests will automatically be redirected to the remaining backend server. In addition to that, the two load balancer nodes monitor each other using Wackamole and Spread, and if the master fails, the slave becomes the master, which means the users will not notice any disruption of the service. HAProxy is session-aware, which means you can use it with any web application that makes use of sessions (such as forums, shopping carts, etc.)."
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