I2 Technologies Us, Inc.

Conor McGann

Bruce C Macartney-Filgate

Craig L Dunn

A remote session server, or bank of remote session servers, is provided to a bank of web servers. Each web server maintains a cache that contains all of the session information for all sessions being serviced by that server. The web server utilizes its local cache to perform all session services. The remote session server maintains a copy of all session information from all caches, and is updated whenever changes are made on each web server. If a web server should go down, an ongoing session can be transferred to a different web server. In such event, the new web server is able to obtain the previous status of the session from the remote web server and continues serving the session in a transparent manner.

Distributed session services

In accordance with the present invention, a messaging system utilizes a local queue manager to receive messages intended for other processes. Messages received by the local queue manager are stored onto a local persistent storage device when a process sending the message has completed the sending action. The local queue manager then sends the message to an appropriate recipient. When the message has been received and confirmed, the recipient removes the message from the persistent storage device. If a hardware or software failure occurs, the message is stored and can be re-sent after the failure is corrected. In certain embodiments, a message writer is operable to communicate the message to the receiving process and remove the message from the queue after sending it to the receiving process. In certain embodiments, a message communicated by the sending process comprises a first format, and a message collector is operable to format the message received from the sending process into a standard format for transport to the local queue manager and storage on the persistent storage device.

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Austin, TX, United States of America

Conor McGann