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overcommit
This term carries a strong connotation of risk and potential failure. In a personal or professional context, it describes a state of being overwhelmed due to poor planning or an inability to say no, often leading to burnout or missed deadlines. It is frequently used reflexively as "overcommit oneself," emphasizing the individual's responsibility for the imbalance.
In technical computing contexts, the word shifts from a negative connotation of failure to a strategic technique of resource management. Here, it describes a deliberate architectural choice to over-provision resources to increase efficiency, operating on the statistical probability that not all users will peak at the same time.
Meanings
To pledge more time, money, or resources to a task or obligation than one is actually capable of providing.
He realized he had overcommitted himself to too many projects this semester.
To allocate more of a specific resource, such as memory or CPU in computing, than is physically available, relying on the assumption that not all resources will be used simultaneously.
The system administrator decided to overcommit the virtual machine memory to maximize server density.