Woocommerce only requires nonces only need to be unique within a 15 minute window. We use the modulo of the floating point time so that our nonces cycle every 15 minutes and add (PID * 15 mins) to ensure that no process on the same machine is using the same range of numbers. The only way a collision can occur is if processes on different machines have the same PID and start the request at the same time (within microseconds).
Woocommerce only requires nonces only need to be unique within a 15 minute window. We use the modulo of the floating point time so that our nonces cycle every 15 minutes and add (PID * 15 mins) to ensure that no process on the same machine is using the same range of numbers. The only way a collision can occur is if processes on different machines have the same PID and start the request at the same time (within microseconds).