Method and system for employing a multiple layer cache mechanism to enhance performance of a multi-user information retrieval system

A computing system for optimizing information technology resource usage, the computing system comprising:

• a central processing unit (CPU);
• a memory coupled to the CPU;
• a computer-readable, tangible storage device coupled to the memory, the storage device storing program instructions that when executed by the CPU via the memory:
• generate a query and based on the query, retrieve a plurality of descriptions of a plurality of data items included in the data repository and identified by a respective plurality of identifiers;
• load into a first cache first chunk of a plurality of chunks of the plurality of identifiers, wherein the first chunk is an ordered list of identifiers of the plurality of identifiers;
• load into a second cache first set of meta information that describes a first set of data items of the plurality of data items, wherein the first set of data items is identified by an ordered sub-list of identifiers of the ordered list of identifiers, and wherein the ordered sub-list of identifiers is a first sub-chunk within the first chunk;
• determine that a portion of the first set of meta information is being viewed via a web page by a user of a client computer in communication with the computing system via a network wherein the portion includes a description of a data item of the first set of data items, and wherein the data item is identified by an identifier in the ordered sub-list of identifiers;
• determine a position of the identifier within the ordered sub-list of identifiers;
• and
• based on the position of the identifier within the ordered sub-list of identifiers, pre-load a second set of meta information into the second cache, wherein the second set of meta information describes a second set of data items of the plurality of data items.

A computer program product for optimizing information technology resource usage, the computer program product comprising:

• one or more computer-readable tangible storage devices;
• and
• program instructions stored on the one or more computer-readable tangible storage devices, the program instructions comprise:
• program instructions to generate a query and based on the query retrieve a plurality of descriptions of a plurality of data items included in the data repository and identified by a respective plurality of identifiers;
• program instructions to load into a first cache first chunk of a plurality of chunks of the plurality of identifiers, wherein the first chunk is an ordered list of identifiers of the plurality of identifiers;
• program instructions to load into a second cache first set of meta information that describes a first set of data items of the plurality of data items, wherein the first set of data items is identified by an ordered sub-list of identifiers of the ordered list of identifiers, and wherein the ordered sub-list of identifiers is a first sub-chunk within the first chunk;
• program instructions to determine that a portion of the first set of meta information is being viewed via a web page by a user of a client computer in communication with the computing system via a network, wherein the portion includes a description of a data item of the first set of data items, and wherein the data item is identified by an identifier in the ordered sub-list of identifiers;
• program instructions to determine a position of the identifier within the ordered sub-list of identifiers;
• and
• program instructions, based on the position of the identifier within the ordered sub-list of identifiers, to pre-load a second set of meta information into the second cache, wherein the second set of meta information describes a second set of data items of the plurality of data items.