Object Storage Service:Download objects (Go SDK V2)

Type

API Name

Description

Simple download

Client.GetObject

• Perform streaming download. The type of the response body is io.ReadCloser.

• Do not support CRC-64.

• Do not directly support the progress bar feature.

• Do not support reconnection for failed connections during streaming read.

Client.GetObjectToFile

• Download objects as local files.

• Download using a single connection.

• Support CRC-64 (enabled by default).

• Support the progress bar feature.

• Support reconnection for failed connections.

Range download

Client.GetObject

• Download a specific range of data.

Read-only class file (Go SDK V2)

ReadOnlyFile

ReadOnlyFile.Read

ReadOnlyFile.Seek

ReadOnlyFile.Close

• Provide File-Like operations that support operations of the io.Reader, io.Seeker, and io.Closer types.

• Provide the Seek capability.

• Support the single-stream mode (default).

• Support the asynchronous prefetch mode to improve the read speed.

• Specify the prefetch of blocks and the number of prefetch chunks.

• Do not support CRC-64.

• Do not directly support the progress bar feature.

• Support reconnection for failed connections.

A signed URL

Client.Presign

• Generate a signed URL that allows HTTP GET requests and has a validity period to authorize users to download an object.

File Download Manager (Go SDK V2)

Downloader.DownloadFile

• Download objects as local files by performing multipart download.

• Specify the size of parts and number of parts that can be downloaded in parallel.

• Support CRC-64 (enabled by default).

• Support the progress bar feature.

• Support reconnection for failed connections.

• Support resumable download.

• Download an object to a temporary object and rename the temporary object (enabled by default). You can modify the configurations.