| 摘要 |
In a peer-to-peer (P2P) system, in each individual transmitting peer (10), the incoming data stream is divided logically and with regard to time into different parts, which are buffered in a volatile memory (13) and are transmitted to the receiving peers (20, 30) on different paths by means of a peer-to-peer transmission mechanism (40). In a receiving peer (20), the received parts of the subdivided data stream are buffered in a volatile memory (21) and are reassembled into a complete data stream. Further, in the receiving peer (20), the parts of the subdivided data stream, buffered by the volatile memory (21), are copied into a persistent memory (22), from where they are copied back into the volatile memory (21) at a later point in time if necessary. In order to reduce the amount of data to be stored persistently, it is proposed that a fraction of the received data is excluded from persistent storing, wherein this exclusion is performed by selecting parts of the subdivided data stream. For this purpose, the selection may preferably be performed in the transmitting peer (10), where the selected fraction is separated from the remaining data of the subdivided data and rerouted into a secondary transmission mechanism (50). Alternatively, the selection may be performed in the receiving peer (20), where the selected fraction is separated from the received data buffered therein and deleted.
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