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1. (WO1998053410) A METHOD AND SYSTEM FOR DISTRIBUTED CACHING, PREFETCHING AND REPLICATION
Latest bibliographic data on file with the International Bureau   

Pub. No.: WO/1998/053410 International Application No.: PCT/US1998/009943
Publication Date: 26.11.1998 International Filing Date: 15.05.1998
Chapter 2 Demand Filed: 23.11.1998
IPC:
G06F 17/30 (2006.01) ,H04L 29/06 (2006.01) ,H04L 29/08 (2006.01)
G PHYSICS
06
COMPUTING; CALCULATING; COUNTING
F
ELECTRIC DIGITAL DATA PROCESSING
17
Digital computing or data processing equipment or methods, specially adapted for specific functions
30
Information retrieval; Database structures therefor
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
L
TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
29
Arrangements, apparatus, circuits or systems, not covered by a single one of groups H04L1/-H04L27/136
02
Communication control; Communication processing
06
characterised by a protocol
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
L
TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
29
Arrangements, apparatus, circuits or systems, not covered by a single one of groups H04L1/-H04L27/136
02
Communication control; Communication processing
06
characterised by a protocol
08
Transmission control procedure, e.g. data link level control procedure
Applicants:
TRUSTEES OF BOSTON UNIVERSITY [US/US]; 147 Bay State Road Boston, MA 02215, US
Inventors:
MIRDAD, Sulaiman, A.; US
HEDDAYA, Abdelsalam, A.; US
YATES, David, J.; US
Agent:
THIBODEAU, David, J., Jr. ; Hamilton, Brook, Smith & Reynolds, P.C. Two Militia Drive Lexington, MA 02421-4799, US
Priority Data:
08/861,93422.05.1997US
Title (EN) A METHOD AND SYSTEM FOR DISTRIBUTED CACHING, PREFETCHING AND REPLICATION
(FR) PROCEDE ET SYSTEME PERMETTANT LA MISE EN ANTEMEMOIRE REPARTIE, LA PRELECTURE ET LA REPRODUCTION DE DOCUMENTS
Abstract:
(EN) A technique for automatic, transparent, distributed, scalable and robust caching, prefetching, and replication in a computer network that request messages for a particular document follow paths from the clients to a home server that form a routing graph. Client request messages are routed up the graph towards the home server as would normally occur in the absence of caching. However, cache servers are located along the route, and may intercept requests if they can be serviced. In order to be able to service requests in this manner without departing from standard network protocols, the cache server needs to be able to insert a packet filter into the router associated with it, and needs also to proxy for the homer server from the perspective of the client. Cache servers may cooperate to service client requests by caching and discarding documents based on its local load, the load on its neighboring caches, attached communication path load, and on document popularity. The cache servers can also implement security schemes and other document transformation features.
(FR) L'invention se rapporte à une technique permettant la mise en antémémoire automatique, transparente, répartie, adaptable et fiable, ainsi que la prélecture et la reproduction de documents dans un réseau informatique. Cette technique nécessite que les messages concernant un document particulier suivent des voies, partant des clients et allant vers un serveur central, qui forment un graphe d'acheminement. Les messages correspondant aux demandes des clients sont acheminés le long du graphe en direction du serveur central comme cela se produirait normalement en l'absence de mise en antémémoire. Cependant, les serveurs à antémémoire sont situés le long de cette voie d'acheminement et peuvent intercepter les demandes s'ils peuvent les satisfaire. Afin de pouvoir satisfaire aux demandes de cette manière, c'est-à-dire sans s'écarter des protocoles de réseau normalisés, le serveur à antémémoire doit être capable d'insérer un filtre à paquet dans le routeur qui lui est associé, et également de faire office de serveur central du point de vue du client. Les serveurs à antémémoire peuvent coopérer dans le but de satisfaire aux demandes de clients par mise en antémémoire et suppression de documents sur la base de leur charge locale, de la charge de leurs antémémoires voisines, de la charge de voies de communication associées et de la 'popularité' des documents demandés. Les serveurs à antémémoire peuvent également mettre en oeuvre des codes de sécurité et d'autres dispositifs de transformation de documents.
Designated States: AL, AM, AT, AU, AZ, BA, BB, BG, BR, BY, CA, CH, CN, CU, CZ, DE, DK, EE, ES, FI, GB, GE, GH, GM, GW, HU, ID, IL, IS, JP, KE, KG, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, MD, MG, MK, MN, MW, MX, NO, NZ, PL, PT, RO, RU, SD, SE, SG, SI, SK, SL, TJ, TM, TR, TT, UA, UG, UZ, VN, YU, ZW
African Regional Intellectual Property Organization (ARIPO) (GH, GM, KE, LS, MW, SD, SZ, UG, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (EPO) (AT, BE, CH, CY, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)