Architecture of the Whois++ Index Service (RFC1913)
Original Publication Date: 1996-Feb-01
Included in the Prior Art Database: 2000-Sep-13
Internet Society Requests For Comment (RFCs)
C. Weider: AUTHOR [+2]
The authors describe an architecture for indexing in distributed databases, and apply this to the WHOIS++ protocol.
Network Working Group C. Weider
Request for Comments: 1913 Bunyip
Category: Standards Track J. Fullton
Architecture of the Whois++ Index Service
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.
The authors describe an architecture for indexing in distributed
databases, and apply this to the WHOIS++ protocol.
The WHOIS++ directory service [Deutsch, et al, 1995] is intended to
provide a simple, extensible directory service predicated on a
template-based information model and a flexible query language. This
document describes a general architecture designed for indexing
distributed databases, and then applys that architecture to link
together many of these WHOIS++ servers into a distributed, searchable
wide area directory service.
This document details a distributed, easily maintained architecture
for providing a unified index to a large number of distributed
WHOIS++ servers. This architecture can be used with systems other
than WHOIS++ to provide a distributed directory service which is also
3. Motivation and Introduction:
It seems clear that with the vast amount of directory information
potentially available on the Internet, it is simply not feasible to
build a centralized directory to serve all this information. If we
are to distribute the directory service, the easiest (although not
necessarily the best) way of building the directory service is to
build a hierarchy of directory information collection agents. In this
architecture, a directory query is delivered to a certain agent in
the tree, and then handed up or down, as appropriate, so that the
query is delivered to the agent which holds the information which
fills the query. This approach has been tried before, most notably
in some implementations of the X.500 standard. However, there are
number of major flaws with the approach as it has been taken. This
new Index Service is designed to fix these flaws.
3.1. The search problem
One of the primary assumptions made by recent implementations of
distributed directory services is that every entry resides in some
location in a hierarchical name space. While this arrangement is
ideal for reading the entry once one knows its locatio...