Download objects using OSS SDK for Go 2.0

OSS SDK for Go V2 provides multiple download methods. Choose one based on your use case.

Type	Operation	Description
Simple download	Client.GetObject	Streaming download. Response body type: io.ReadCloser. No CRC-64. No built-in progress bar. No reconnection during streaming read.
Simple download	Client.GetObjectToFile	Saves objects to local files. Single-connection download. CRC-64 enabled by default. Progress bar supported. Reconnection on failure.
Range download	Client.GetObject	Downloads a specific byte range of an object.
File-Like operations	ReadOnlyFile ReadOnlyFile.Read ReadOnlyFile.Seek ReadOnlyFile.Close	Implements io.Reader, io.Seeker, and io.Closer interfaces. Supports random access via Seek. Single-stream mode (default). Asynchronous prefetch mode for faster reads. Configurable prefetch block size and chunk count. No CRC-64. No built-in progress bar. Reconnection on failure.
A signed URL	Client.Presign	Generates a time-limited signed URL for downloading an object via HTTP GET.
Downloader	Downloader.DownloadFile	Multipart download to local files. Configurable part size and parallelism. CRC-64 enabled by default. Progress bar supported. Reconnection on failure. Resumable download. Downloads to a temporary object, then renames it (enabled by default). Configurable.