As a XenForo developper and big board owner, I worked with the LiteSpeed team to make this addon available to the XenForo customers.
I have been using it for a month on my board realitygaming.fr, and LSCache for XenForo 2 his a must have addon when you own a XenForo forum with LiteSpeed : it's reducing server load and can even reduce the impact of L7 DDOS attacks.