Aspects of the disclosure relate to message processing. A computing platform may intercept an application message, which may be directed to a message bus. The computing platform may input the application message into a model, which may output a message priority score for the application message. The computing platform may compare, using the model, the message priority score to a message priority threshold. Based on identifying that the message priority score does not exceed the message priority threshold, the computing platform may route the application message to a message storage system rather than the message bus. The computing platform may monitor the message bus to detect available processing capacity. Based on identifying that the available processing capacity meets or exceeds a message processing threshold, route the application message to the message bus.