Google Inc.

Naga Sridhar Kataru

Georges R Harik

Hanping Feng

Eric Russell Fredricksen

Adam Douglas Smith

Brian A Singerman

Eric Russell Fredrickson

A system provides news alerts. For example, the system may receive topics of interest to users and periodically obtain news articles that originate from multiple sources of news articles and relate to the topics of interest to the users. The system may generate news alerts that include information associated with one or more of the news articles and provide the news alerts to the users.

Systems and methods for providing news alerts

The present invention is directed to a client-server network system implementing a multi-tier caching strategy for a user to access a document efficiently. When serving a document to client, the document is examined for embedded references to other documents. The embedded references are extracted and then assigned a priority. The referenced documents are preloaded to the client prior to receiving a request for them. The referenced documents are obtained locally from the server cache or obtained from their respective web hosts and transmitted according to the assigned priority.

Prioritized preloading of documents to client

A method of providing content to a user is described. A set of one or more key terms is identified in accordance with user history information. The user is provided an invitation to receive content on an ongoing basis. The content is related to the set of one or more key terms.

Recommended alerts

The present invention is directed to a method for updating a cache. A server identifies whether certain preconditions have been met for a document in a cache from freshness parameters associated with a document identifier for the document. Then when the preconditions have been met, a first document content is retrieved from a remote host. A first content fingerprint for the first document content is calculated. The first document content is stored in the cache. Then a content difference is calculated between the first document content and a second document content, both associated with the document identifier. The content difference is stored. Then the document identifier is associated with the content difference.

Refreshing cached documents and storing differential document content

A client-server network system implements a multi-tier caching strategy for a user to access a document efficiently. When serving a document to client, the document is examined for embedded references to other documents. The embedded references are extracted and then assigned a priority. The documents referenced are obtained locally from the server cache or obtained from their respective web hosts and transmitted according to the assigned priority. If the client determines that it has the document, the transmission of is terminated. If the client or server determines that a newly requested document is one of the referenced documents being transmitted, the transmission is given a higher priority. In some instances, the server calculates a content difference between a current version of a referenced and a previous version and transmits this content.

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French Camp, CA, United States of America

Naga Sridhar Kataru