How can data caching have a negative effect on load testing results?
Re: data caching
You will get ambiguous results if data caching is present while you carryout load testing. The base state and final system state would include unknown count of data caching too. So its best that you start from aclean base state to have representative measures. If possible, you can also carryout several cycles of load testing to smoothen out the effect of any unknown/inherent data caching.