The average salary of all instructors in institutions offering graduate degrees was $71,121 per year, as of the 2010-11 academic year, according to the American Association of University Professors.
ZooKeeper is an open source Apacheâ¢ project that provides a centralized infrastructure and services that enable synchronization across a cluster. ZooKeeper maintains common objects needed in large cluster environments.
Developer ID and Gatekeeper. Gatekeeper is a feature introduced in OS X Mountain Lion that helps protect users from downloading and installing malicious software. Signing your applications, plug-ins, and installer packages with a Developer ID certificate lets Gatekeeper verify that they are not known malware and have not been tampered with.