Massive vehicle-mounted machine track data storage method

A trajectory data and vehicle-machine technology, which is applied in the storage field of massive vehicle-machine trajectory data, can solve problems such as low efficiency, achieve the effect of reducing IO operations and improving retrieval efficiency

Inactive Publication Date: 2015-04-15
北京中交兴路车联网科技有限公司
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Problems solved by technology

However, this storage method is extremely inefficient. In the case of concurrent query and insert operations, there will be mutual lock waiting, especially when extracting the trajectory of a single vehicle for a certain number of days, it is necessary to scan

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  • Massive vehicle-mounted machine track data storage method
  • Massive vehicle-mounted machine track data storage method
  • Massive vehicle-mounted machine track data storage method

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[0009] like figure 1 As shown in Figure 1, this storage method for massive vehicle and machine trajectory data uses the file system as the storage medium, and the file system is divided into three levels of directory structure according to the three levels of year, month, and day. A track file is stored in the corresponding directory; with the growth of time, the above storage method will generate a large number of track files, occupying the Inodes (inodes, file data of the file system) are stored in "blocks", so obviously , you must also find a place to store the meta information of the file, such as the creator of the file, the date of creation of the file, the size of the file, etc. This area for storing the meta information of the file is called the number of inodes, and the number of Inodes continues to increase. It will reduce the IO storage efficiency. In order to solve this problem, the trace files of the previous day are merged and compressed at 0:00 every day.

[00...

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Abstract

The invention discloses a massive vehicle-mounted machine track data storage method which can meet the storage requirement of TB-grade track data generated every day under the condition of access of massive vehicle-mounted machine, and can search track data of a certain vehicle in a short time. The storage method takes a file system as a storage medium, the file system is divided into directory structures with three layers according to years, months and days, each vehicle-mounted machine generates a track file every day, the track file is stored in corresponding directories, and the track files in a previous day are combined and compressed at 0 o'clock every day.

Description

technical field [0001] The invention relates to the technical field of vehicle data processing, in particular to a method for storing massive vehicle-machine trajectory data. Background technique [0002] At present, most of the mainstream vehicle trajectory data storage methods use the database as the medium, and the trajectories of multiple vehicles are stored in a database table. However, this storage method is extremely inefficient. In the case of concurrent query and insert operations, there will be mutual lock waiting, especially when extracting the trajectory of a single vehicle for a certain number of days, it is necessary to scan a large number of database block files. The corresponding information is extracted. Therefore, this storage method can only cope with the scenario of less than 10,000 vehicles, and will be at a loss for the current rapid growth in the demand for vehicle access. Contents of the invention [0003] The technical solution of the present inve...

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Application Information

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IPC IPC(8): G06F17/30
CPCG06F16/22
Inventor 韩希发杨健邓伟
Owner 北京中交兴路车联网科技有限公司
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