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A method and device for downloading distributed files

A distributed file and file download technology, applied in the field of data transmission, can solve the problems affecting the download speed of video surveillance videos, etc., to achieve the effect of improving speed, speeding up download speed, and ensuring download speed

Active Publication Date: 2020-01-14
ZHEJIANG UNIVIEW TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a downloading method and device for distributed files, so as to solve the problem of downloading video surveillance recordings in the prior art, all of which must be performed through a video-on-demand server VOD, causing the video-on-demand server VOD to become a downloading method for monitoring video recordings. Bottleneck, a problem that seriously affects the download speed of video surveillance recordings

Method used

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  • A method and device for downloading distributed files
  • A method and device for downloading distributed files
  • A method and device for downloading distributed files

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Embodiment Construction

[0039] The technical solution of the present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments, and the following embodiments do not constitute a limitation of the present invention.

[0040] A method for downloading distributed files, applied to file download clients, such as figure 2 shown, including:

[0041] Step S1, sending a data node request message to the metadata management server to obtain information about the data node storing the downloaded file.

[0042] This embodiment is described by taking the downloading of distributedly stored video surveillance recordings in the video surveillance system as an example. The schematic diagram of downloading video surveillance video in this embodiment, as image 3 As shown, MD is the metadata management server, which is used to manage the data nodes; Client is the storage client, which is deployed on the camera or the stream receiving server, and is used to sto...

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PUM

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Abstract

The invention discloses a downloading method and a downloading device for a distributed file. The downloading method comprises the following steps: starting a plurality of concurrence threads according to acquired information of data nodes, establishing connection between each concurrence thread and one of the data nodes, sending a file downloading request including the name of the file to be downloaded and an initial bandwidth to the corresponding data node, downloading the file for a distributed downloading bandwidth according to the data node and the file downloading request, and then periodically sending a downloading bandwidth updating request to redistribute a bandwidth according to an actual downloading bandwidth. The device disclosed by the invention comprises a node request module, a file inquiry module, a downloading module and an updating module. According to the method and the device, the downloading bandwidth of each data node can be reasonably used; and furthermore, the downloading speed of a client can be maximized, and the speed for synchronous downloading of multiple clients is increased.

Description

technical field [0001] The invention belongs to the field of data transmission, in particular to a method and device for downloading distributed files. Background technique [0002] With the development of video surveillance technology, video surveillance is used more and more widely in all walks of life. In addition to real-time video surveillance of various monitoring places, video surveillance systems are also used in subways, prisons, banks, safe cities and other video surveillance systems. In the process, it is often encountered that the video surveillance recording needs to be downloaded to the local for viewing. And with the development of science and technology, video surveillance is becoming more and more intelligent. When performing intelligent analysis on video surveillance recordings, in order to perform intelligent analysis more conveniently and quickly, it is also necessary to download the video surveillance recordings to the local. [0003] The method of down...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N7/18H04N5/76H04N21/2385
CPCH04N5/76H04N7/18H04N21/2385
Inventor 吕志明章奇伟
Owner ZHEJIANG UNIVIEW TECH CO LTD