- News and Announcements
- Product Introduction
- Purchase Guide
- Getting Started
- Console Guide
- Console Overview
- Bucket Management
- Bucket Overview
- Creating Buckets
- Deleting Buckets
- Querying Buckets
- Empty Buckets
- Setting Access Permission
- Setting Bucket Encryption
- Setting Hotlink Protection
- Setting Origin-Pull
- Setting Cross-Origin Access
- Setting Versioning
- Setting up a Static Website
- Setting Lifecycle
- Setting Logging
- Accessing Bucket List Using Sub-Account
- Adding Bucket Policies
- Setting INTELLIGENT TIERING
- Setting Inventory
- Domain Name Management
- Setting Bucket Tags
- Setting Cross-Bucket Replication
- Enabling Global Acceleration
- Object Management
- Uploading Objects
- Downloading Objects
- Copying Objects
- Viewing Object Information
- Searching for Objects
- Sorting and Filtering Objects
- Direct Upload to COS ARCHIVE Storage
- Modifying Storage Class
- Deleting File Fragments
- Setting Object Access Permission
- Setting Object Encryption
- Custom Headers
- Deleting an Object
- Restoring Archived Objects
- Folder Management
- Data Extraction
- Setting Object Tags
- Exporting Object URLs
- Restoring a Historical Object Version
- Batch Operation
- Monitoring Reports
- Data Processing
- Application Integration
- User Tools
- Tool Overview
- Installation and Configuration of Environment
- COSBrowser
- COSCLI (Beta)
- COSCLI Overview
- Download and Installation Configuration
- Common Commands
- Generating and Modifying Configuration Files - config
- Creating Buckets - mb
- Deleting Buckets - rb
- Querying Bucket/Object List - ls
- Obtaining Statistics on Different Types of Objects - du
- Uploading/Downloading/Copying Objects - cp
- Syncing Upload/Download/Copy - sync
- Deleting Objects - rm
- Getting File Hash Value - hash
- Listing Incomplete Multipart Uploads - lsparts
- Clearing Incomplete Multipart Uploads - abort
- Retrieving Archived Files - restore
- Getting Pre-signed URL - signurl
- FAQs
- COSCMD
- COS Migration
- FTP Server
- COSFS
- Hadoop Tool
- COSDistCp
- Hadoop-cos-DistChecker
- HDFS TO COS
- Diagnostic Tool
- GooseFS
- Update History
- Getting Started
- Key Features
- Deployment Guide
- OPS Guide
- Data Security
- GooseFS on TKE Cloud Native Practices
- Getting Started
- Using GooseFS as Fluid Dataset Runtime
- Multi-Master Node Deployment
- Multiple-Master Affinity Scheduling
- Accelerating Data in COS
- Global Client Deployment
- Using Parameters for Encryption
- Manual Scaling
- Data Caching and Metadata Caching
- Data Affinity Scheduling
- Data Scheduling Based on Tolerations and Taints
- Data Preloading
- Deploying Multiple Datasets on the Same Cluster via Placement
- Best Practice
- Overview
- Access Control and Permission Management
- ACL Practices
- Cloud Access Management Practices
- Granting Sub-accounts Access to COS
- Cases of Permission Setting
- Working with COS API Access Policies
- Temporary Key Security Guide for Frontend Direct Upload to COS
- Generating and Using Temporary Keys
- Grant Sub-account Permissions to Pull Tag List
- Granting Sub-account Under One Root Account Permission to Manipulate Buckets Under Another Root Account
- Performance Optimization
- Data Migration
- Accessing COS Using the AWS S3 SDK
- Data Disaster Recovery and Backup
- Direct Data Upload
- Domain Name Management Practice
- Data Security
- Data Verification
- Big Data Practice
- Using COS in the Third-party Applications
- Using APIs to Zip Files
- Using APIs to Merge Files
- Developer Guide
- Creating Request
- Bucket
- Object
- Data Management
- Data Disaster Recovery
- Data Security
- Cloud Access Management (CAM)
- Batch Processing
- Global Acceleration
- Data Processing
- Metadata Acceleration
- Monitoring and Alarms
- Troubleshooting
- API Documentation
- Introduction
- Common Request Headers
- Common Response Headers
- Error Codes
- Request Signature
- Operation List
- Service APIs
- Bucket APIs
- Basic Operations
- Access Control List (acl)
- Cross-Origin Resource Sharing (cors)
- Lifecycle
- Bucket Policy (policy)
- Hotlink Protection (referer)
- Tag (tagging)
- Static Website (website)
- Intelligent Tiering
- Bucket inventory(inventory)
- Versioning
- Cross-Bucket Replication（replication）
- Log Management(logging)
- Global Acceleration (Accelerate)
- Bucket Encryption (encryption)
- Custom Domain Name (Domain)
- Object APIs
- Batch Operation APIs
- Data Processing APIs
- Image Processing
- Basic Image Processing
- Scaling
- Cropping
- Rotation
- Converting Format
- Quality Change
- Gaussian Blurring
- Adjusting Brightness
- Adjusting Contrast
- Sharpening
- Grayscale Image
- Image Watermarking
- Text Watermarking
- Obtaining Basic Image Information
- Obtaining Image EXIF
- Obtaining Image’s Average Hue
- Removing Image Metadata
- Quick Thumbnail Template
- Limiting Output Image Size
- Pipeline Operators
- Image Advanced Compression
- Persistent Image Processing
- Image Compression
- Basic Image Processing
- Image Processing
- SDK Documentation
- SDK Overview
- Preparations
- Android SDK
- Object Operations
- Uploading Objects
- Downloading Objects
- Copying and Moving Objects
- Listing Objects
- Deleting Objects
- Restoring Archived Objects
- Querying Object Metadata
- Generating Pre-Signed URLs
- Configuring Preflight Requests for Cross-origin Access
- Server-Side Encryption
- Single-Connection Bandwidth Limit
- Extracting Object Content
- Getting Started
- Quick Experience
- Bucket Operations
- Remote Disaster Recovery
- Data Management
- Cloud Access Management
- Data Verification
- Setting Custom Headers
- Setting Access Domain Names (CDN/Global Acceleration)
- Image Processing
- Troubleshooting
- Object Operations
- C SDK
- C++ SDK
- .NET(C#) SDK
- Getting Started
- Bucket Operations
- Object Operations
- Uploading Objects
- Downloading Objects
- Copying and Moving Objects
- Listing Objects
- Deleting Objects
- Checking Whether Objects Exist
- Restoring Archived Objects
- Querying Object Metadata
- Getting Pre-Signed URLs
- Configuring Preflight Requests for Cross-Origin Access
- Server-Side Encryption
- Single-URL Speed Limits
- Extracting Object Content
- Cross-Region Disaster Recovery
- Data Management
- Cloud Access Management
- Image Processing
- Setting Custom Headers
- Setting Access Domain Names (CDN/Global Acceleration)
- Troubleshooting
- Backward Compatibility
- Go SDK
- iOS SDK
- Getting Started
- Quick Experience
- Bucket Operations
- Object Operations
- Uploading Objects
- Downloading Objects
- Listing Objects
- Copying and Moving an Object
- Extracting Object Content
- Checking Whether an Object Exists
- Deleting Objects
- Restoring Archived Objects
- Querying Object Metadata
- Server-Side Encryption
- Object Access URL
- Generating Pre-Signed URLs
- Configuring CORS Preflight Requests
- Cross-region Disaster Recovery
- Data Management
- Cloud Access Management
- Image Processing
- Setting Custom Headers
- Setting Access Endpoints
- Troubleshooting
- Java SDK
- Getting Started
- Bucket Operations
- Object Operations
- Uploading Objects
- Downloading Objects
- Copying and Moving Objects
- Listing Objects
- Deleting Objects
- Checking Whether Objects Exist
- Querying Object Metadata
- Modifying Object Metadata
- Object Access URL
- Getting Pre-Signed URLs
- Restoring Archived Objects
- Server-Side Encryption
- Client-Side Encryption
- Single-URL Speed Limits
- Extracting Object Content
- Data Management
- Cross-Region Disaster Recovery
- Cloud Access Management
- Troubleshooting
- Image Processing
- Setting Access Endpoints
- JavaScript SDK
- Node.js SDK
- PHP SDK
- Python SDK
- Mini Program SDK
- Error Codes
- FAQs
- Service Agreement
- Glossary
- News and Announcements
- Product Introduction
- Purchase Guide
- Getting Started
- Console Guide
- Console Overview
- Bucket Management
- Bucket Overview
- Creating Buckets
- Deleting Buckets
- Querying Buckets
- Empty Buckets
- Setting Access Permission
- Setting Bucket Encryption
- Setting Hotlink Protection
- Setting Origin-Pull
- Setting Cross-Origin Access
- Setting Versioning
- Setting up a Static Website
- Setting Lifecycle
- Setting Logging
- Accessing Bucket List Using Sub-Account
- Adding Bucket Policies
- Setting INTELLIGENT TIERING
- Setting Inventory
- Domain Name Management
- Setting Bucket Tags
- Setting Cross-Bucket Replication
- Enabling Global Acceleration
- Object Management
- Uploading Objects
- Downloading Objects
- Copying Objects
- Viewing Object Information
- Searching for Objects
- Sorting and Filtering Objects
- Direct Upload to COS ARCHIVE Storage
- Modifying Storage Class
- Deleting File Fragments
- Setting Object Access Permission
- Setting Object Encryption
- Custom Headers
- Deleting an Object
- Restoring Archived Objects
- Folder Management
- Data Extraction
- Setting Object Tags
- Exporting Object URLs
- Restoring a Historical Object Version
- Batch Operation
- Monitoring Reports
- Data Processing
- Application Integration
- User Tools
- Tool Overview
- Installation and Configuration of Environment
- COSBrowser
- COSCLI (Beta)
- COSCLI Overview
- Download and Installation Configuration
- Common Commands
- Generating and Modifying Configuration Files - config
- Creating Buckets - mb
- Deleting Buckets - rb
- Querying Bucket/Object List - ls
- Obtaining Statistics on Different Types of Objects - du
- Uploading/Downloading/Copying Objects - cp
- Syncing Upload/Download/Copy - sync
- Deleting Objects - rm
- Getting File Hash Value - hash
- Listing Incomplete Multipart Uploads - lsparts
- Clearing Incomplete Multipart Uploads - abort
- Retrieving Archived Files - restore
- Getting Pre-signed URL - signurl
- FAQs
- COSCMD
- COS Migration
- FTP Server
- COSFS
- Hadoop Tool
- COSDistCp
- Hadoop-cos-DistChecker
- HDFS TO COS
- Diagnostic Tool
- GooseFS
- Update History
- Getting Started
- Key Features
- Deployment Guide
- OPS Guide
- Data Security
- GooseFS on TKE Cloud Native Practices
- Getting Started
- Using GooseFS as Fluid Dataset Runtime
- Multi-Master Node Deployment
- Multiple-Master Affinity Scheduling
- Accelerating Data in COS
- Global Client Deployment
- Using Parameters for Encryption
- Manual Scaling
- Data Caching and Metadata Caching
- Data Affinity Scheduling
- Data Scheduling Based on Tolerations and Taints
- Data Preloading
- Deploying Multiple Datasets on the Same Cluster via Placement
- Best Practice
- Overview
- Access Control and Permission Management
- ACL Practices
- Cloud Access Management Practices
- Granting Sub-accounts Access to COS
- Cases of Permission Setting
- Working with COS API Access Policies
- Temporary Key Security Guide for Frontend Direct Upload to COS
- Generating and Using Temporary Keys
- Grant Sub-account Permissions to Pull Tag List
- Granting Sub-account Under One Root Account Permission to Manipulate Buckets Under Another Root Account
- Performance Optimization
- Data Migration
- Accessing COS Using the AWS S3 SDK
- Data Disaster Recovery and Backup
- Direct Data Upload
- Domain Name Management Practice
- Data Security
- Data Verification
- Big Data Practice
- Using COS in the Third-party Applications
- Using APIs to Zip Files
- Using APIs to Merge Files
- Developer Guide
- Creating Request
- Bucket
- Object
- Data Management
- Data Disaster Recovery
- Data Security
- Cloud Access Management (CAM)
- Batch Processing
- Global Acceleration
- Data Processing
- Metadata Acceleration
- Monitoring and Alarms
- Troubleshooting
- API Documentation
- Introduction
- Common Request Headers
- Common Response Headers
- Error Codes
- Request Signature
- Operation List
- Service APIs
- Bucket APIs
- Basic Operations
- Access Control List (acl)
- Cross-Origin Resource Sharing (cors)
- Lifecycle
- Bucket Policy (policy)
- Hotlink Protection (referer)
- Tag (tagging)
- Static Website (website)
- Intelligent Tiering
- Bucket inventory(inventory)
- Versioning
- Cross-Bucket Replication（replication）
- Log Management(logging)
- Global Acceleration (Accelerate)
- Bucket Encryption (encryption)
- Custom Domain Name (Domain)
- Object APIs
- Batch Operation APIs
- Data Processing APIs
- Image Processing
- Basic Image Processing
- Scaling
- Cropping
- Rotation
- Converting Format
- Quality Change
- Gaussian Blurring
- Adjusting Brightness
- Adjusting Contrast
- Sharpening
- Grayscale Image
- Image Watermarking
- Text Watermarking
- Obtaining Basic Image Information
- Obtaining Image EXIF
- Obtaining Image’s Average Hue
- Removing Image Metadata
- Quick Thumbnail Template
- Limiting Output Image Size
- Pipeline Operators
- Image Advanced Compression
- Persistent Image Processing
- Image Compression
- Basic Image Processing
- Image Processing
- SDK Documentation
- SDK Overview
- Preparations
- Android SDK
- Object Operations
- Uploading Objects
- Downloading Objects
- Copying and Moving Objects
- Listing Objects
- Deleting Objects
- Restoring Archived Objects
- Querying Object Metadata
- Generating Pre-Signed URLs
- Configuring Preflight Requests for Cross-origin Access
- Server-Side Encryption
- Single-Connection Bandwidth Limit
- Extracting Object Content
- Getting Started
- Quick Experience
- Bucket Operations
- Remote Disaster Recovery
- Data Management
- Cloud Access Management
- Data Verification
- Setting Custom Headers
- Setting Access Domain Names (CDN/Global Acceleration)
- Image Processing
- Troubleshooting
- Object Operations
- C SDK
- C++ SDK
- .NET(C#) SDK
- Getting Started
- Bucket Operations
- Object Operations
- Uploading Objects
- Downloading Objects
- Copying and Moving Objects
- Listing Objects
- Deleting Objects
- Checking Whether Objects Exist
- Restoring Archived Objects
- Querying Object Metadata
- Getting Pre-Signed URLs
- Configuring Preflight Requests for Cross-Origin Access
- Server-Side Encryption
- Single-URL Speed Limits
- Extracting Object Content
- Cross-Region Disaster Recovery
- Data Management
- Cloud Access Management
- Image Processing
- Setting Custom Headers
- Setting Access Domain Names (CDN/Global Acceleration)
- Troubleshooting
- Backward Compatibility
- Go SDK
- iOS SDK
- Getting Started
- Quick Experience
- Bucket Operations
- Object Operations
- Uploading Objects
- Downloading Objects
- Listing Objects
- Copying and Moving an Object
- Extracting Object Content
- Checking Whether an Object Exists
- Deleting Objects
- Restoring Archived Objects
- Querying Object Metadata
- Server-Side Encryption
- Object Access URL
- Generating Pre-Signed URLs
- Configuring CORS Preflight Requests
- Cross-region Disaster Recovery
- Data Management
- Cloud Access Management
- Image Processing
- Setting Custom Headers
- Setting Access Endpoints
- Troubleshooting
- Java SDK
- Getting Started
- Bucket Operations
- Object Operations
- Uploading Objects
- Downloading Objects
- Copying and Moving Objects
- Listing Objects
- Deleting Objects
- Checking Whether Objects Exist
- Querying Object Metadata
- Modifying Object Metadata
- Object Access URL
- Getting Pre-Signed URLs
- Restoring Archived Objects
- Server-Side Encryption
- Client-Side Encryption
- Single-URL Speed Limits
- Extracting Object Content
- Data Management
- Cross-Region Disaster Recovery
- Cloud Access Management
- Troubleshooting
- Image Processing
- Setting Access Endpoints
- JavaScript SDK
- Node.js SDK
- PHP SDK
- Python SDK
- Mini Program SDK
- Error Codes
- FAQs
- Service Agreement
- Glossary
The following terms may be involved when you use the SDK:
| Term | Description |
|---|---|
| APPID | A unique user-level resource identifier for COS access. It can be obtained at Manage API Key. |
| SecretId | A developer-owned secret ID used for the project. It can be obtained at Manage API Key. |
| SecretKey | A developer-owned secret key used for the project. It can be obtained at Manage API Key. |
| Bucket | A container used for data storage. For more information, please see Bucket Overview. |
| BucketName-APPID | Bucket name, with the value of APPID as its suffix. Example: examplebucket-1250000000 |
| Object | A file stored in COS. It is the basic entity that is stored. |
| ObjectKey | A unique identifier of an object stored in COS. For more information about objects and object keys, please see Object Overview. |
| Region | Region information. For more information about the enumerated values (such as ap-beijing, ap-hongkong, and eu-frankfurtplease), please see Regions and Access Endpoints. |
| ACL | Access Control List, a list of access control information for a specified bucket or object. For more information, please see ACL Overview. |
Note：If you encounter errors such as non-existent functions or methods when using the XML version of the SDK, please update the SDK to the latest version and try again.
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