Real-time search engine

Details Real-time search engine Real-time search engine

1999-12-15

2002-04-02

Coby, Frantz (Department: 2771)

Data processing: database and file management or data structures

Database design

Data structure types

C707S793000, C709S215000, C709S217000

Reexamination Certificate

active

06366907

ABSTRACT:

BACKGROUND
Search engines as they currently exist on the Internet are used by people all over the world to find and download data objects of interest that reside on servers. Typically, these search engines periodically examine many servers on the Internet to see what data objects each server contains. Thereafter, the search engine constructs an index of each server's contents, and links the contents to that server's location.
The construction of the index is a time consuming task, and because of the relative cost involved to the servers and the search engine, it cannot be done very often. The timeliness of the information created by the search engine is sacrificed in order to reduce the burden on the index builder of the search engines and the servers that contain the data being searched.
This means that the search engine index is quickly out of date. For some types of data objects, this matters very little, since the data objects are created and modified relatively slowly. However, for data objects that are created and removed relatively often, the search engine indices are impractical, and for data objects that are added and removed daily, the standard search engines are practically useless. In addition, the current paradigm assumes a relatively static server environment, but in an environment where servers come up and go down relatively frequently and data objects are added and deleted hourly or more frequently, the standard search engine methodology is not useful at all.
Thus, it can be seen that there is a need for an Internet search engine that maintains an up-to-date index of data content residing on servers that are currently connected to the Internet.
There is a further need for a real-time search engine that significantly reduces the cost of constructing a search engine index using methods employed by the prior art.
SUMMARY
The present invention satisfies these needs by providing a method for creating a real-time search engine over the Internet that provides a search response containing data object descriptions and server descriptions
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of data objects that are currently available for transfer from a provider server directly to a recipient client in response to a recipient client search request. This method comprises the provider server connecting to a real-time search engine through the Internet, the provider server providing the real-time search engine with data object descriptions of data objects residing on the provider server, and the real-time search engine indexing data object descriptions associated with the data object of the provider server, wherein the data object descriptions provided by the provider server are purged from the real-time search engine when the provider server is disconnected from the real-time search engine. The method further comprises the provider server automatically, in real-time, providing the real-time search engine with data object descriptions of data objects that are added to the provider server.
The method preferably further comprises the provider server automatically, in real-time, notifying the real-time search engine of data objects that are removed from the provider server, wherein the real-time search engine then purges the data object descriptions.
The data object descriptions comprise any of the following: a title of the data object, the size of the data object, the type of data object, any text associated with the data object, the creator of the data object, the quality rating of the data object, and the provider server on which the data object resides. The server description
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comprises any of the following: the server Internet Protocol address, the number of simultaneous connections allowed by the server, the server's reliability, and the server's name.
Preferably, a client search command is used, wherein a recipient client searches the data object descriptions to find the best data object and selects the most optimal provider server that the data object resides on.
Furthermore, the recipient client search request further comprises a provider server limitation criteria, wherein the search engine prunes the search response of all provider servers that do not meet the server limitation criteria.
In a preferred embodiment, the provider server limitation criteria comprises a bandwidth limitation, wherein the search engine prunes the search response of provider servers that have a bandwidth capability that is below the bandwidth limitation.
Optionally, the real-time search engine purges from the search response provider servers that cannot accept additional recipient client download requests.
Also in a preferred embodiment, an automated search response sort by the client. The automated search response is sorted by the responsiveness value, wherein the responsiveness value is determined by measuring the amount of time an echo reply message takes to be returned by the provider server to the recipient client. Preferably, the provider server is pruned from the search response if the provider server did not respond to the recipient client's echo request within a specified period of time.
The data object is of the type selected from the group comprising: an audio data object, a text data object, a image data object, a video data object, and a software executable data object.
In a preferred embodiment, the real-time search engine further comprises the recipient selecting one of the provider servers in the search response, and then the recipient client downloading the data object from the selected provider server. Additionally, the recipient client simultaneously operates as a provider server to other recipient clients, making data objects that have been downloaded by the recipient client available to other recipient clients on the Internet.


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