Load testing verifies the system performance under the expected peak load.  The peak load needs to set by a series of parameters that you have benchmarked targets.  For example, these parameters could include: Load testing: 20,000 concurrent users; and response time of under 4 seconds Stress testing: Verifies the server performance under extreme load.  Test this through examining how many users are required to bring your server Endurance testing: Load test over an extended...

Whilst updating nodejs and npm on a Centos 6 or 7 server running Apache, I hit a few walls and as a matter of process found some commands that are handy to run before doing a deep dive in Google.   Cleaning the cache sudo yum clean all rm -rf /var/cache/yum/* To make the cache sudo yum clean all; sudo yum makecacheIf you want to run several commands use semi-colon as noted above.   Updating When running an update command run sudo yum -y...