Immediate order book failover

An system for performing an immediate failover from a primary order book to a secondary order book, wherein (a) the primary order book represents a current state of one or more orders according to a first node computing entity and a first ledger file and (b) the secondary order book represents a current state of all orders according to a second node computing entity and a second ledger file, the system comprising:

• a first node computing entity comprising at least one processor, a communications interface configured for communicating via at least one network, and at least one first memory storing computer program code, the at least one first memory and the computer program code configured to, with the processor, cause the first node computing entity to at least:
• process an input stream of order information to generate (a) a primary order book and (b) an output stream of order information, the output stream of order information comprising one or more blocks of a common block structure,
• store the output stream of order information in a first ledger file in the first memory,
• read the first ledger file and providing, via the communications interface, a secondary stream of order information read from the first ledger file, wherein the reading of the secondary stream of order information from the first ledger file is performed by a replication agent operating in a framework layer of the first node computing entity and the receiving of the secondary order stream at the second node computing entity is performed by a replication agent operating in a framework layer of the second node computing entity, and
• provide the secondary stream of order information;
• and
• a second node computing entity comprising at least one processor, a communications interface configured for communicating via at least one network, and at least one second memory storing computer program code, the at least one second memory and the computer program code configured to, with the processor, cause the second node computing entity to at least:
• receive the secondary stream of order information,
• store the order information of the secondary stream of order information in a second ledger file in the second memory, and
• process the secondary stream of order information to generate a secondary order book.

A computer program product for performing an immediate failover from a primary order book to a secondary order book, wherein (a) the primary order book represents a current state of one or more orders according to a first node computing entity and a first ledger file and (b) the secondary order book represents a current state of all orders according to a second node computing entity and a second ledger file, the computer program product comprising at least one non-transitory computer-readable storage medium having computer-executable program code instructions stored therein, the computer-executable program code instructions comprising program code instructions configured to, when executed by a processor of a first node computing entity of the plurality of node computing entities:

• process an input stream of order information to generate (a) a primary order book and (b) an output stream of order information, the output stream of order information comprising one or more blocks of a common block structure;
• store the output stream of order information in a first ledger file in the first memory;
• read the first ledger file and providing, via the communications interface, a secondary stream of order information read from the first ledger file, wherein the reading of the secondary stream of order information from the first ledger file is performed by a replication agent operating in a framework layer of the first node computing entity and the receiving of the secondary order stream at the second node computing entity is performed by a replication agent operating in a framework layer of the second node computing entity;
• and
• provide the secondary stream of order information, wherein, a second node computing entity:
• receives the secondary stream of order information,
• stores the order information of the secondary stream of order information in a second ledger file in the second memory, and
• processes the secondary stream of order information to generate a secondary order book.