TRANSACTION PROCESSING FAILOVER

Transaction processing systems in accordance with aspects of the invention may process a variety of transactions. Transaction processing systems may include a transaction processing device and a distributed processing system. The transaction processing device obtains transaction requests from a variety of client devices and process the transaction requests. The distributed processing system may also obtain the transaction requests and maintain a transaction history of the transaction requests obtained and/or processed by the transaction processing device. Both the distributed processing system and the transaction processing device may send a transaction succeeded event based on the transaction being processed successfully. The transaction processing device and distributed ledger may also maintain an indication of if a particular transaction has been processed. When the transaction processing device becomes available after a period of unavailability, the transaction history for both the transaction processing device and distributed ledger may be reconciled.