Torch Object Storage
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- Documentation
Torch Object StorageSDK ReferenceJavaBucket InterfaceManage Bucket ConfigurationManaging Bucket Storage Types (Java SDK)
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Managing Bucket Storage Types (Java SDK)
Copy pageDownload PDFManaging Bucket Storage Types (Java SDK)
A bucket is a globally unique namespace in TOS, functioning as a data container used to store object data. TOS provides multiple bucket-level storage types, each designed for distinct application scenarios. This article explains how to manage bucket storage types using the TOS Java SDK.
Storage types
TOS provides the following types of bucket storage.
Storage type | Description | Access permission value |
Storage type | Description | Access permission value |
Standard | The default bucket storage type, suitable for a variety of business scenarios, including social and sharing-type image and audio/video applications, large-scale websites, big data analytics, program downloads, and mobile applications. | StorageClassType.STORAGE_CLASS_STANDARD |
Infrequent Access | Applicable to business scenarios with low access frequency (an average of 1 to 2 accesses per month), such as hot standby data, surveillance video data, etc. | StorageClassType.STORAGE_CLASS_IA |
Flashback Archive | Designed for long-lived, rarely accessed data, such as archives. | StorageClassType.STORAGE_CLASS_ARCHIVE_FR |
Intelligent Tiering | Designed for data with unpredictable access patterns. It automatically moves data between storage types based on how often it's accessed to reduce storage costs. | StorageClassType.STORAGE_CLASS_INTELLIGENT_TIERING |
Cold Archive | Designed for cold data that is long-lived and rarely accessed. Data must be stored for at least 180 days. You must first restore cold archived data before you can access it. | StorageClassType.COLD_ARCHIVE |
Configure storage type
You can set the storage type for a specified bucket through the putBucketStorageClass interface of the TOS Java SDK.
Storage types
warning
- By default, only the bucket owner is authorized to set the bucket storage type.
- When creating a bucket, if no storage type is specified, the default storage type is Standard Storage.
- After the bucket storage type is configured, if the storage type is not specified when uploading an object, copying an object, or initializing a multipart upload task, the object will, by default, inherit the storage type of the bucket.
Sample code
The following code demonstrates how to set the storage type for a bucket.
import com.volcengine.tos.TOSV2;
import com.volcengine.tos.TOSV2ClientBuilder;
import com.volcengine.tos.TosClientException;
import com.volcengine.tos.TosServerException;
import com.volcengine.tos.comm.common.StorageClassType;
import com.volcengine.tos.model.bucket.PutBucketStorageClassInput;
import com.volcengine.tos.model.bucket.PutBucketStorageClassOutput;
public class PutBucketStorageClassExample {
public static void main(String[] args) {
String endpoint = "your endpoint";
String region = "your region";
String accessKey = System.getenv("TOS_ACCESS_KEY");
String secretKey = System.getenv("TOS_SECRET_KEY");
String bucketName = "your bucket name";
TOSV2 tos = new TOSV2ClientBuilder().build(region, endpoint, accessKey, secretKey);
try{
StorageClassType storageClass = StorageClassType.STORAGE_CLASS_IA;
PutBucketStorageClassInput input = new PutBucketStorageClassInput().setBucket(bucketName)
.setStorageClass(storageClass);
PutBucketStorageClassOutput output = tos.putBucketStorageClass(input);
System.out.println("putBucketStorageClass succeed");
} catch (TosClientException e) {
System.out.println("putBucketStorageClass failed");
System.out.println("Message: " + e.getMessage());
if (e.getCause() != null) {
e.getCause().printStackTrace();
}
} catch (TosServerException e) {
System.out.println("putBucketStorageClass failed");
System.out.println("StatusCode: " + e.getStatusCode());
System.out.println("Code: " + e.getCode());
System.out.println("Message: " + e.getMessage());
System.out.println("RequestID: " + e.getRequestID());
} catch (Throwable t) {
System.out.println("putBucketStorageClass failed");
System.out.println("unexpected exception, message: " + t.getMessage());
}
}
}
Retrieve bucket storage type
You can obtain the currently configured storage type of a specified bucket through the headBucket interface of the TOS Java SDK.
For relevant instructions and sample code regarding the headBucket interface, please refer to Get bucket metadata.
Related documentation
Last updated: 2026.08.07 17:32:57
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