International Business Machines Corporation

Daniel Christopher Shupp

Brian Keith Martin

Gennaro A Cuomo

Brad Byer Topol

Steven Dale Ims

Donald Francis Ferguson

Madhu K Chetuparambil

Rajesh S Agarwalla

Subbarao K Meduri

Thomas Francis McElroy

Goran D Zlokapa

John S Cox

Charles Philip Fricanco

Charles Philip Fricano

A distributed cache management system that minimizes invalid cache notification events is provided. A cache management system in a sending device processes outgoing cache notification events by adding information about the source server's clock. A cache management system in the receiving device then uses this information to adjust event information once the event is received.

Method, apparatus, and program for minimizing invalid cache notification events in a distributed caching environment

A method, system, and computer program product, by which portions of the session information that page-content is dependent upon are 'pushed' to the client from the origin server in a way such that auxiliary servers, e.g. other application servers and edge-servers, have access to the session information and fragment dependancy data to generate auxiliary-server cache-IDs for the custom pages. This enables distribution of the load away from the origin server, allowing better application distribution and scalability through more effective caching.

Method and system for generating auxiliary-server cache identifiers

A method of caching contextually variant objects in a common cache. The method can include identifying an object type for a requested object and determining whether the requested object has an object type which is specified among an enumerated set of cacheable object types which can be stored in the common cache. Importantly, each cacheable object type can have an associated context. If the requested object has an object type which is specified among the enumerated set of cacheable object types, a cache key can be computed for the requested object using cache key formulation rules for the associated context. Finally, the requested object can be retrieved from the common cache using the formulated cache key. Notably, in one aspect of the invention, the method also can include the step of invalidating individual objects in the common cache according to corresponding cache policies of associated contexts.

Context-sensitive caching

Apparatus for managing a cache in a distributed caching environment having an event auditor and a cache auditor

A data processing system and method are described for specifying a cache policy for caching pages which include dynamic content. A user is permitted to request a page to be displayed. The page includes multiple fragments. An application is executed which generates those fragments. The generation of fragments is are unchanged by the caching policy. Each one of the servlets is executed to present a different one of the fragments. Caching of the page fragments can now be processed separately from the execution of the application.

Method and system for specifying a cache policy for caching web pages which include dynamic content

A method for enhanced fragment caching. The method can include identifying in at least one of first and second retrieved page fragments a variable object utilized by the fragment upon execution to produce dynamic content. Separate cache entries can be written for the first and second retrieved page fragments where the first and second retrieved page fragments differ in ways other than an evaluation of the variable object. Otherwise, a single cache entry can be written for both the first and second retrieved page fragments where the first and second retrieved page fragments differ only in the evaluation of the variable object.

Enhanced fragment cache

Growing community of inventors

Raleigh, NC, United States of America

Daniel Christopher Shupp