$arr_19 ), array( 3, false, $arr_20, $arr_24 ), array( 2, false, "\" />", $arr_25 ) ) ); ?> $arr_27 ), array( 3, false, $arr_28, $arr_30 ), array( 2, false, "\" />\n\n", $arr_31 ) ) ); ?> array( 2, false, false, $arr_9 ), array( 4, $arr_10, "if", $arr_245, $arr_248 ), array( 2, false, "\n", $arr_249 ) ) ); ?> rr_466 ), array( 4, $arr_467, "if", $arr_482, $arr_484 ), array( 2, false, "\n", $arr_485 ) ) ); ?> OLYMPIAN » Linux Magazine
 

Exploring the Linux-based Zeus load balancer

OLYMPIAN

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On today’s networks, distributing requests in a cluster of web servers requires more than just assigning the requests in a round robin. The Zeus ZXTM 7400 appliance demonstrates the technical finesse necessary to keep busy websites running.

Even the most powerful web server eventually reaches its limit. Getting help isn’t a problem; the load redistribution can be complicated. Each server cluster needs to distribute requests intelligently to use resources in a meaningful way, and the client should not notice what is going on behind the scenes. One way of achieving this is the ZXTM 7400 appliance by Zeus Technology [1], which I recently tested. Techniques Load balancers distinguish between physical servers and virtual IPs (VIPs). In this case, the physical servers are web servers. Each web server has a unique IP (real IP, or RIP). The VIP is only configured on the load balancer.

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Zeus_ZXTM_7400_Load_Balancer.pdf (340.66 kB)
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