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The Architecture of the Common Indexing Protocol (CIP) (RFC2651)

IP.com Disclosure Number: IPCOM000003240D
Original Publication Date: 1999-Aug-01
Included in the Prior Art Database: 2000-Sep-13
Document File: 14 page(s) / 39K

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

J. Allen: AUTHOR [+2]

Abstract

The Common Indexing Protocol (CIP) is used to pass indexing information from server to server in order to facilitate query routing. Query routing is the process of redirecting and replicating queries through a distributed database system towards servers holding the desired results. This document describes the CIP framework, including its architecture and the protocol specifics of exchanging indices.

This text was extracted from a ASCII document.
This is the abbreviated version, containing approximately 7% of the total text.

Network Working Group J. Allen

Request for Comments: 2651 WebTV Networks

Category: Standards Track M. Mealling

Network Solutions, Inc.

August 1999

The Architecture of the Common Indexing Protocol (CIP)

Status of this Memo

This document specifies an Internet standards track protocol for the

Internet community, and requests discussion and suggestions for

improvements. Please refer to the current edition of the "Internet

Official Protocol Standards" (STD 1) for the standardization state

and status of this protocol. Distribution of this memo is unlimited.

Copyright Notice

Copyright (C) The Internet Society (1999). All Rights Reserved.

Abstract

The Common Indexing Protocol (CIP) is used to pass indexing

information from server to server in order to facilitate query

routing. Query routing is the process of redirecting and replicating

queries through a distributed database system towards servers holding

the desired results. This document describes the CIP framework,

including its architecture and the protocol specifics of exchanging

indices.

1. Introduction

1.1. History and Motivation

The Common Indexing Protocol (CIP) is an evolution and refinement of

distributed indexing concepts first introduced in the Whois++

Directory Service [RFC1913, RFC1914]. While indexing proved useful in

that system to promote query routing, the centroid index object which

is passed among Whois++ servers is specifically designed for

template-based databases searchable by token-based matching. With

alternative index objects, the index-passing technology will prove

useful to many more application domains, not simply Directory

Services and those applications which can be cast into the form of

template collections.

The indexing part of Whois++ is integrated with the data access

protocol. The goal in designing CIP is to extract the indexing

portion of Whois++, while abstracting the index objects to apply more

broadly to information retrieval. In addition, another kind of

technology reuse has been undertaken by converting the ad-hoc data

representations used by Whois++ into structures based on the MIME

specification for structured Internet mail.

Whois++ used a version number field in centroid objects to facilitate

future growth. The initial version was "1". Version 1 of CIP (then

embedded in Whois++, and not referred to separately as CIP) had

support for on...