Caching allows the LoadMaster to store server content locally for fast retrieval and to reduce server load. Since cached content is stored in RAM, it will naturally drive up RAM utilization. Caching is allowed to utilize up to 20% of the total RAM available to LoadMaster. Utilization of this can then be controlled on a per-service basis as a percentage of the global value.

Caching does increase CPU utilization, but not significantly. It requires each request and response to be evaluated for whether the request should be pulled from cache and the response stored in cache.