Systems and methods are provided to increase the rate at which a system can accept and process data transaction request messages. The system includes a pre-processer that filters incoming data transaction request messages prior to transmitting the messages for further processing, for example, by a matching engine. The pre-processer quickly identifies whether a new arriving data transaction request is transactable. If the new arriving data transaction request is not transactable, then the data transaction request will be transmitted and stored in a main data structure and not transmitted to the matching engine.