A while ago when I tried to stress-test my site on Load Impact, my web server actually couldn’t handle the traffic and hung in the middle of the test…

Recently I installed this wordpress plugin called Quick Cache (Speed Without Compromise) and I noticed a huge difference in page response time. Installation was a piece of cake.

Then I ran the stress test again from Load Impact. The result is very satisfying. The green line is the number of active client. The blue line is the user load time. From the chart, it shows that the average load time is constant even when the # of active clients increases. Amazing!