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File Processing Service
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Last updated: 2024-03-25 15:33:39
File Processing Service
Last updated: 2024-03-25 15:33:39
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Overview

File processing features such as hash calculation, decompression, and compression and packaging are provided for all files stored in COS. Currently, the following file processing features are supported:
Feature
Description
Hash calculation
It calculates the file hash. Currently, the following hash calculation algorithms are supported: MD5, SHA-1, and SHA-256.File size limits:
Sync request: Below 128 MB.
Async request: Below 50 GB.
File decompression
It decompresses .zip, .tar, .gz, or .7z packages in the cloud and dumps the extracted files to COS.
File size limit: Below 5 TB.
Multi-file zipping
It compresses multiple files into a .zip, .tar, or tar.gz format.
File limit: Up to 10,000 files of less than 50 GB in total can be zipped.
Note:
The file processing service is provided and charged by CI. For billing details, see File Processing Fees.
Currently, file processing is supported in Beijing, Shanghai, Guangzhou, Chengdu, Hong Kong (China), Singapore, and Silicon Valley regions.

Use Cases

Data verification

The file hash calculation feature can be used to quickly check the data consistency.

Daily tools

On-cloud PaaS file compression and decompression features are provided, which enable you to preview files after decompression and enrich online preview scenarios.

How to Use

The file processing feature is provided by CI, so you need to click here to activate CI first.
After activating CI, you can enable file processing in the COS console and then use the feature in the console or via an API.

Using COS console

In the file list

You can click More Actions in the bucket file list to perform file processing operations such as hash calculation on files.

Through a job

You can perform file processing operations through jobs and workflows.
Note:
Currently, this feature can be used only through a job but not a workflow.
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