Abstract: A method for providing information to a client over a peer-to-peer network, the method includes: receiving, by a tracker proxy, a re-directed first request of a client to access a tracker; and sending, by the tracker proxy, a first response that identifies a network cache as a peer. A method for providing a video file to a client, the method includes: receiving a request of a client to retrieve a video file from a web site or another external source out of multiple requests that are sent to multiple information sources; and providing to the client cache a first response that identifies a network cache as a source of the video file.

Abstract: A non-transitory computer readable medium, a system and a method for streaming, the method may include: intercepting, by a redirector, a request from a streaming application, to receive metadata indicative of location of multiple video file segments; sending to the streaming application metadata that points to locations of cached video file segments within a single streaming cache or multiple streaming caches and points to locations outside the streaming cache of other video file segments that are not cached; receiving, by the streaming cache, a request from the streaming application to receive a cached video file segment; sending from the streaming cache the cached video file segment.

Abstract: A system, a method and a computer program product for transmission over a network, the method includes: receiving, by an intermediate system coupled to the network, a portion of a data structure that is aimed to a recipient computer; generating a stamp that is responsive to a content of a segment of the data structure and is indifferent to transfer information about a transmission of the data structure; wherein the portion may include the segment or equals the segment; determining, by the intermediate system, whether to cache the portion, in response to at least a comparison between the stamp and stamps of cached portions of data structures; selectively caching the portion in response to the determination; and transmitting to the recipient computer either one of the portion of the transmitted data structure and a cached version of the portion of the transmitted data structure.