International Business Machines Corporation

John Paul Cammarata

Erik John Burckart

Andrew J Ivory

Aaron Kyle Shook

Curtis E Hrischuk

Michael Joseph Spreitzer

Michael John Morton

A method for cache sharing among branch proxy servers. A branch proxy sever receives a request for accessing a resource at a data center. The branch proxy server creates a cache entry in its cache to store the requested resource if the branch proxy server does not store the requested resource. Upon creating the cache entry, the branch proxy server sends the cache entry to a master proxy server at the data center to transfer ownership of the cache entry if the master proxy server did not store the resource in its cache. When the resource becomes invalid or expired, the master proxy server informs the appropriate branch proxy servers storing the resource to purge the cache entry containing this resource. In this manner, the master proxy server ensures that the cached resource is synchronized across the branch proxy servers storing this resource.

Cache sharing among branch proxy servers via a master proxy server at a data center

An improved solution for managing messages through a request response protocol network utilizing a path-based adaptive prioritization and latency management is provided. A weight for a message is determined at a message management computing device based upon a number of hops and a latency of networks passed through by the message. A hop latency target for a current hop segment is evaluated relative to an overall latency target and the determined weight for the message. A priority of the message is adjusted in response to determining that the overall latency target, relative to the weight for the message and the hop latency target for the current hop segment, exceeds a configured allowable hop latency deviation for the current hop segment.

Path-based adaptive prioritization and latency management

An improved solution for managing messages through a request response protocol network utilizing a path-based adaptive prioritization and latency management is provided. In an embodiment of the invention, a method of managing a message being conveyed through a request response protocol network via a path includes: receiving the message; determining for the message at least one of: an incoming portion of the path or an outgoing portion of the path; and adjusting a priority of the message based on a latency target for the determined portion of the path.

An Ajax proxy indirection technique enables a local, front-end proxy server to handle Ajax requests from an Ajax client that must be serviced by an external Ajax server in an external domain, instead of a local Ajax back-end server exposing itself to the external domain. The front-end proxy server accepts the Ajax client's request and forwards it to the local Ajax back-end server. The proxy server asks the local AJAX server for the credentials to be used in the 'external' AJAX request. The local Ajax back-end server then responds to the proxy server with meta-data for the external domain request that the proxy will make to the external domain. The proxy server uses the credentials of the 'external' AJAX request to make the external request to the external Ajax server in the external domain. The proxy server performs any authentication and necessary domain mapping with the external Ajax server before sending a response from the external Ajax server back to the client.

Ajax proxy indirection for external domain requests

A set of programs allows a server computer that does not have an application installed to temporarily hand off a client request for the application to a peer server until the application is installed on the first server. The hand off is transparent to the client and temporary to the peer server. The server asynchronously starts the application, and when the application is ready for use, the first server stops sending requests to the peer server, and begins serving the requests. Since the first server has full session knowledge, it will be transparent to the client that the server servicing those requests temporarily changed.

Growing community of inventors

Wake Forest, NC, United States of America

John Paul Cammarata