Abstract: The present specification provides a high availability system. In one aspect a replicator is situated between a plurality of servers and a network. Each server is configured to execute a plurality of identical message processors. The replicator is configured to forward messages to two or more of the identical message processors, and to accept a response to the message as being valid if there is a quorum of identical responses.

Abstract: A method and system for pooling computing resources is provided. In an embodiment a system comprises a plurality of quotation servers connected to a quotation engine. The quotation is also connected to a clearing server. The quotation engine receives data representing quotations from different servers. The quotation engine also receives data representing actual trades from the clearing server. The quotation engine is configured to perform operations on the quotations and the actual trades in a fashion that deletes certain quotations to reduce consumption of computing resources on the quotation engine and thereby increase efficiency of processing of the quotes to arrive at a final quotation. The system also relieves processing burden on the quotation servers by shifting the processing to the quotation engine.

Abstract: Computers, computer systems, and methods can be configured to receive selection of a security data record set, receive selection of an input date, determine for the input date a benchmark yield spread of the security data record set with reference to a benchmark security, and determine for a date of last trade a last trade yield spread of the security data record set with reference to the benchmark security. This may be performed over one or more networks using one or more servers or client computers, which may be provided with a value line, or other user-interface control, to select the input date and a display element to display the benchmark yield spread and the last trade yield spread.

Abstract: A method and system for pooling computing resources is provided. In an embodiment a system comprises a plurality of quotation servers connected to a quotation engine. The quotation is also connected to a clearing server. The quotation engine receives data representing quotations from different servers. The quotation engine also receives data representing actual trades from the clearing server. The quotation engine is configured to perform operations on the quotations and the actual trades in a fashion that deletes certain quotations to reduce consumption of computing resources on the quotation engine and thereby increase efficiency of processing of the quotes to arrive at a final quotation. The system also relieves processing burden on the quotation servers by shifting the processing to the quotation engine.