1. A method for fault-tolerant quality of service (QoS) data communication, the method including: performing by at least one processing device: differentiating at least one message data into a primary storage, wherein the at least one message data is differentiated based on at least one queue selection rule; storing the differentiated at least one message data in a secondary storage if the primary storage becomes exhausted; removing the oldest at least one message data to make room for the newest at least one message data when the primary storage and the secondary storage are exhausted; logging an error message for tracking removed at least one message data; prioritizing the at least one message data, wherein the at least one message data is prioritized based on at least one queue sequencing rule; and communicating the at least one message data based at least in part on the prioritization of the at least one message data, wherein at least the steps of differentiating, storing and prioritizing occur between the transport layer and the session layer in the Open Systems Interconnection (OSI) seven layer protocol model.