A computationally-efficient system for encoding a message object implements instructions including determining a token of the message object. The token identifies a structure of the message object. The instructions include obtaining a dictionary definition based on the token. The dictionary definition describes the structure of the message. The message includes multiple entries. Each of the entries is characterized by a data type and a field identifier. The dictionary definition defines an order of the entries. The instructions include, according to an order specified by the dictionary definition, selecting each entry of a set of entries in the message in sequence and writing the entry to a byte queue exclusive of the data type and the field identifier. The instructions include initiating transmission of the byte queue over a communications network.