724 Solutions Software, Inc.

Liquid Markets Inc

Mark Edward Molloy

Ian McLean Pattison

An apparatus includes a computer network including at least one auction server, at least one seller client and at least one buyer client. The at least one auction server, the at least one seller client and the at least one buyer client are executing on a computer system a synthetic continuous double auction having contingent bidding on a plurality of heterogeneous item auctions. The synthetic continuous double auction includes a composite reverse auction, defined to include a bid set including a first contingent bid on a first of the plurality of heterogeneous item auctions and a second contingent bid on a second of the plurality of heterogeneous item auctions, is ended when i) the first contingent bid from the bid set is recognized as a winning bid and substantially simultaneously ii) the second contingent bid from the bid set is withdrawn as a remaining bid.

Synthetic continuous double auctions

A process group resource manager for managing protected resources during transaction processing is disclosed. The process group resource manager comprises a first process configured to provide access to a protected resource during one or more transactions, the first process being further configured to construct a transaction record for each respective transaction, wherein each transaction record includes each request message received by the first process and each response message sent by the first process during a particular transaction. The process group resource manager further comprises a second process configured to serially replay the transactions in which the first process participates, the second process being configured to cause a particular transaction to rollback if the replay of that transaction does not match the transaction record constructed by the first process for that transaction. The process group resource manager also comprises a third process configured to store a durable image of the third process for use in reconstructing either the first process or the second process.

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Otley, IA, United States of America

Mark Edward Molloy