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Tailorable Folder Cache Technique

IP.com Disclosure Number: IPCOM000037298D
Original Publication Date: 1989-Dec-01
Included in the Prior Art Database: 2005-Jan-29
Document File: 2 page(s) / 70K

Publishing Venue

IBM

Related People

Jaaskelainen, W: AUTHOR [+3]

Abstract

Direct access storage device (DASD) folder processing is minimized for specific office applications by identifying each field within the folder as a field which is actually written to DASD or as a field which is maintained in a memory cache. A most efficient environment is achieved when a minimum amount of document description detail information is written to the DASD folder, and the rest of the detail information is cached in memory. (Image Omitted)

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Tailorable Folder Cache Technique

Direct access storage device (DASD) folder processing is minimized for specific office applications by identifying each field within the folder as a field which is actually written to DASD or as a field which is maintained in a memory cache. A most efficient environment is achieved when a minimum amount of document description detail information is written to the DASD folder, and the rest of the detail information is cached in memory.

(Image Omitted)

The cacheable nature of each field is defined via a set of processing characteristics. The characteristics can be tailored for each folder that is created. The characteristics can also be modified dynamically to adapt to changing processing conditions. 1. Basic cache definitions are as follows: a. NORMAL - Exclusive DASD processing.

b. DEFER - Cache processing which is purged to DASD if

data remain at document close.

c. DELETE - Cache processing which is never put to

DASD. Fig. 1 shows a sample cache field definition

for a typical folder.

Different folder applications are permitted to have

different cache options. This is illustrated in Fig. 2. 2. The cache is allocated when a document is opened, on a per document basis. Certain types of documents are

permitted to be

excluded from cache processing.

(Image Omitted)

3. The cache is deallocated when a document

is closed. If any data

remain (meaning all the fields were not deleted), it is

purged if the option selected was DEFER.

Fig. 3 p...