when using php-amqplib to operate rabbitmq, it is found that basic_qos has three parameters
prefetch_size prefetch_count global
global and prefetch_count roughly understand the meaning of these two parameters
but the meaning of the first parameter, prefetch_size, is a little unclear, and many materials on the Internet say that rabbitmq does not support it, but the official website does not seem to see that the parameter prefetch_size is not supported, so it is confused
.