clustering versus load-balancing

Seems that often times the concept of clustering is often mixed up with that of load-balancing. I thought I’d quickly write something up to help clarify the difference between the two.

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Load Balancing Email

Here’s a different approach on using DNS to distribute users across multiple email servers. Load Balancing Email

local & global load balancing on the cheap

Not many people know what LVS is. I ran World Health Organization’s public website (www.who.int) using a pair of Compaq DL360 servers running Linux Virtual Server, which is an open-source load-balancer. And guess what, during SARS, we saw over 14 million hits a day at the peak. While I don’t have the specific cps / concurrent conn numbers (we didn’t measure those), the boxes did just fine. (more…)