A publish/subscribe broker messaging system and method for processing a data message based on a message broker scheduling algorithm. The scheduling algorithm can be configured in association with a message broker to receive and transmit the data message associated with one or more publishers to a subscriber. The subscriber can register a subscription with respect to the message broker to receive the data message based on a selected topic. An attribute can be added to the selected topic description based on the scheduling algorithm in order to schedule the data message from the publisher with respect to the selected topic via the message broker. The data message with respect to the selected topic from the publisher can be processed sequentially and the scheduling algorithm can process other topics simultaneously. The data messages from other publishers with similar topic can also be processed simultaneously in order to transmit a high volume of message while ensuring high levels of service.