Factor 8 – concurrency

Scale out via the process model. This factor is more or less a statement of a positive outcome of factor six. Traditionally, there was a lot of debate over threads versus processes. Threads were hailed as an innovation, and suddenly they were everywhere. Today, the pendulum is turning back towards processes, certainly on the server side, but also, more surprisingly, on the client side, where modern browsers use a process for each user visible tab.

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