Feature Overview

Last updated: 2021-03-15 17:27:42

COS offers the following features:

Features Description
Operations Bucket Operations With COS, you can create, query, delete, and empty buckets. For detailed directions, see Bucket Management.
Object Operations Storage classes. You can choose a storage class from INTELLIGENT TIERING, STANDARD, STANDARD_IA, ARCHIVE, or DEEP ARCHIVE provided by COS according to the access frequency of your objects. For more information, please see Storage Class Overview.
Objects/Folders: can be uploaded, queried, downloaded, copied, and deleted. For detailed directions, please see Object Management.
Data Management Lifecycle With COS, you can set rules that will allow you to automatically delete an object or transition it between storage classes after a specified number of days. For more information, see Lifecycle Overview.
Static Website You can configure a bucket to host a static website and access the static website through the bucket's endpoint. For more information, see Static Website Hosting.
Inventory COS allows you to configure an inventory task to regularly scan your bucket for specified objects or objects with the same prefix. You can perform these tasks daily or weekly, and each task will output an inventory report, which is stored in the specified bucket as a CSV file. For more information, see Inventory Overview.
Bucket Tagging A bucket tag can be used as an identifier for easier bucket grouping and management. You can set, query, and delete tags for a specified bucket. For more information, see Bucket Tag Overview.
Event Notification Used in conjunction with the Serverless Cloud Function (SCF), COS can send you timely notifications about resource changes (such as when a new file has been uploaded or deleted). For more information, see Event Notifications.
Data Extraction This feature uses Structured Query Language (SQL) statements to filter the objects stored in COS so as to extract specific objects and get desired data. With COS Select, you can reduce the amount of data transferred by COS for lower costs and latency during data extraction. For more information, see SELECT Overview.
Logging This feature is used to log the access details of a source bucket; these logs are then stored in a destination bucket for better bucket management. For more information, see Logging Overview.
Object Tagging This feature is designed to help group and manage objects in your bucket by adding a key-value pair as an object identifier. An object tag consists of a `tagKey`, an equal sign `=`, and a `tagValue`, for example, `group = IT`. You can set, query, and delete tags for a specified object. For more information, please see Object Tagging Overview.
Remote Disaster Recovery Versioning Enabling versioning allows you to store multiple versions of an object in the same bucket. You can query, delete, or restore the objects by version ID. Versioning enables you to recover data that was lost due to accidental deletion or application failure. For more information, see Versioning Overview.
Cross-Bucket Replication By configuring a cross-bucket replication rule, incremental objects can be automatically and asynchronously replicated between buckets for disaster recovery and data backup. For more information, please see Cross-Bucket Replication Overview.
Data Security Encryption COS can apply an object-level encryption policy to your data before it is written to the IDC disk, and automatically decrypt it when it is accessed. For more information, please see Server-Side Encryption Overview and Bucket Encryption Overview.
Hotlink Protection COS supports configuring hotlink protection. You can configure a blocklist/allowlist through the hotlink protection feature on the console to protect your data resources. For more information, see Hotlink Protection Practice.
Access Management Cross-Origin Access With COS, you can set HTML5 CORS configurations to enable access among different origins. COS can respond to CORS OPTIONS requests and return specified rules to the browser as configured by the developer. For detailed directions, see Setting CORS.
Origin-Pull COS allows you to set an origin-pull rule on your bucket so that it can pull data from an external origin if the requested object does not exist in your bucket, or a specific request needs to be redirected. For more information, please see Setting Origin-Pull.
Bucket Policy You can add a policy to a bucket to grant or deny an account or source IP (or IP range) access permission for a COS resource. For more information, see Adding Bucket Policies.
Access Control You can manage the access permissions for your buckets and objects by configuring an Access Control List (ACL). When receiving a resource request, COS will check the ACL of the bucket/object to determine whether the requester has the required access permission. For more information, see Concepts and Granting Sub-accounts Access to COS.
Access Acceleration CDN Acceleration COS has integrated the CDN acceleration feature to download and distribute large amounts of data from COS buckets. It is most useful in scenarios where the same data is downloaded repeatedly. For more information, see CDN Acceleration Overview
Global Acceleration The COS global acceleration feature can help you quickly access your buckets and improve your access success rate, further improving business stability as well as the overall user experience. For more information, see Global Acceleration Overview.
Single-Connection Bandwidth Limit COS allows setting a bandwidth limit on uploads and downloads to ensure sufficient bandwidth for your other applications. For more information, please see Single-Connection Bandwidth Limit.
Batch Jobs Batch Operations You can specify an operation to be performed for a specified list of objects in a bucket. This involves generating an inventory of objects through the inventory feature to serve as the specified object list, or you can record the objects to be processed in a CSV file according to inventory file formatting requirements. Then, COS will perform the specified batch operation on the objects in the inventory file. For more information, see Batch Processing Overview.
Data Monitoring Monitoring and Alarms COS data such as read/write requests and traffic are collected and displayed on the Cloud Monitor. You can view COS monitoring details on the Cloud Monitor console. For more information, see Monitoring and Alarming.
Dashboard COS supports data monitoring, with which you can view the amount of data stored in different storage classes by different periods, as well as the trends. For more information, please see Dashboard and Querying Monitoring Data.
Setting Alarm Policies You can leverage the alarm policy feature of Cloud Monitor to set threshold-reaching alarms for COS monitoring metrics. An alarm policy must include the policy name, policy type, trigger condition, alarm object, and alarm notification template. For more information, please see Setting Alarm Polices.
Data Processing Image Processing COS has integrated the professional all-in-one media solution, Cloud Infinite (CI), to perform image processing, content moderation, detection, and many more services. You can use the COS upload and process APIs to process media data. For more information, see Image Processing Overview.
File Decompression The file decompression feature is a data processing solution provided through SCF. Once enabled, when a compressed file is uploaded to COS, SCF will be triggered automatically to decompress the file into the specified directory and bucket. For more information, see File Decompression.
CDN Cache Purging This COS feature is provided through SCF to help you automatically purge data that is cached on CDN edge servers. For more information, see CDN Cache Purging.
Tools Management Tools COS provides a suite of practical tools such as COSBrowser, COSCMD, and COS Migration to help manage and/or migrate data. For more information, see Tools Overview.
APIs/SDKs APIs & SDKs
  • APIs: COS provides a rich set of APIs and API-specific documentation that describes API usage, parameters, sample requests, responses, and error codes. For more information, please see Operation List.
  • SDKs: COS offers SDKs for various programming languages, including Android, C, C++, .NET, Go, iOS, Java, JavaScript, Node.js, PHP, Python, and WeChat Mini Programs. For more information, please see SDK Overview.
  • Supported Protocols Various Protocols COS supports various transfer protocols, including HTTP1.0, HTTP1.1, HTTP2.0, and QUIC. In addition, the TLS1.0, TLS1.1, and TLS1.2 encryption protocols are supported. HTTP2.0 and QUIC are in beta testing. Therefore, if you need to use them, please go to online support or submit a ticket, and we will add you to the allowlist.

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