There are 1 ten thousand users in the database. What is the best way to send short messages in groups?

The total user base can be divided according to the processing capacity per unit time.

Suppose there is only one mass transmission, and there are 10,000 transmissions per hour.

Send by saturation, that is, monitor the remaining quantity sent through the job and add a decimal list below a certain value.

You can save the list to be sent through database, text, etc. . .

Maintain stable memory and resource consumption. . .