Understanding reservations, concurrency, and locking in Nova. Imagine that two colleagues, Alice and Bob, issue a command to launch a new virtual machine at approximately the same moment in time. Which would allow for a total of 16 IP addresses for virtual machines. The tasks are all pretty straightforward.

A collection of simple recommendations for decent Web application frontends. Sometimes these decisions are consciously accepted as being in line with the intended overall system architecture. More often, though, they are accepted simply because developers assume they embody the state of the art of development practices. The server application adheres to .

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