Importance

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Abstract

Systems and methods are described for providing dictionary services that can be decoupled from transmission services. For example, a subscriber can request content via a network of a transmission services provider, which offers dictionary services via a third-party dictionary services provider. In response to receiving the content request from the subscriber, the transmission services provider can issue a dictionary request to the dictionary services provider, which maintains subscriber dictionary models that indicate which data blocks are presently stored in each subscriber's local storage. As data blocks are received from a content source in response to the content request, a dictionary model corresponding to the requesting subscriber can be accessed and used to determine which of the data blocks are presently stored in the subscriber's local storage. The transmission services provider can use those determinations to communicate only those data blocks the requesting subscriber does not already have in local storage.

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First Claim