Bucket
A bucket is a carrier of objects, which can be considered as a "container" for storing objects. You can manage buckets and configure attributes for buckets through various methods such as the Tencent Cloud console, APIs, and SDKs. For example, you can set a bucket to be used for static website hosting or set access permission for a bucket.
Object
An object is the basic unit of object storage, and it is stored in a bucket (for example, a photo stored in an album). You can manage objects through various methods such as the Tencent Cloud console, APIs, and SDKs. In API and SDK examples, the naming format for objects is <ObjectKey>.
APPID
APPID is a permanent unique application ID assigned to you after you sign up for a Tencent Cloud account. You can view your APPID on the Account Information page.
APPID is often used in bucket names. A complete bucket name consists of a user-defined string and APPID, connected by a hyphen "-". For example, in
examplebucket-1250000000, 1250000000 is the APPID.UID
APPID can also be used to generate temporary keys, specify bucket policies, or specify resources in CAM policy settings. In such cases, APPID is also referred to as UID, both of which have the same value.
UIN
A UIN is an account ID. It is fixed, unique, and in one-to-one correspondence to an APPID and can be viewed in Account Information. In COS, it can be used to generate temporary keys, specify bucket policies, or specify resources in CAM policy settings. In such cases, UIN and UID are used in the same way, but they have different prefixes.
ACL
Access Control List (ACL) is one of the resource-based access management options, used to describe an access permission behavior. In object storage, it can be used to manage access to buckets and objects. With ACL, you can grant basic read and write permissions to other primary accounts, sub-accounts, and user groups.
CORS
Cross-origin resource sharing (CORS) refers to HTTP requests where the origin of the resource that initiates the request is different from the origin of the destination resource.
SecretKey
Secret ID and Secret Key, collectively known as Cloud API key, are the security credentials required for users to access Tencent Cloud APIs for identity authentication. They can be obtained in API Key Management. Secret Key is used to encrypt the signature string and verify the signature string on the server side. Multiple Cloud API keys can be created for one APPID.
SecretId
SecretId and SecretKey, collectively known as Cloud API keys, are security credentials required for identity verification when accessing Tencent Cloud APIs. You can obtain them in API Key Management. SecretId is used to identify the API caller's identity. Multiple Cloud API keys can be created for one APPID.
policy
A policy consists of several elements and is used to describe specific information about authorization. For more information, see Overview.
Public network downstream traffic
Public network downstream traffic is the traffic generated by data transfer from COS to the client over the internet, including the traffic generated by downloading an object directly through an object link or by browsing an object at a static website endpoint.
CDN origin-pull traffic
CDN origin-pull traffic is the traffic generated by data transfer from COS to CDN edge node.
Default Domain
The default endpoint is COS origin's domain name, which is automatically generated based on the bucket name and region when you create a bucket. It's important to distinguish it from the default acceleration domain name. For more information, see Overview.
Default CDN Acceleration Domain Name
It is the domain name passing through CDN cache nodes, which is generated by default and you can choose to enable or disable. For more information, see Overview.
Custom CDN acceleration domain name
You can bind for your bucket a custom domain name to CDN and access objects in your bucket using this domain name. For more information, see Overview.
Custom origin domain name
You can bind your own domain name as a custom endpoint to the bucket for access to the objects in it. For more information, see Overview.
Data retrieval
Storage classes suitable for cold data include STANDARD_IA and ARCHIVE. To read or download data in STANDARD_IA, the backend needs to retrieve it first. ARCHIVED data cannot be read or downloaded until it is restored to the STANDARD storage class.
MAZ
Multiple Availability Zones (Multi-AZ) refers to the multi-AZ storage architecture introduced by Tencent Cloud Object Storage. Customer data is distributed across multiple different data centers within a city. In the event of a total failure of a data center due to extreme situations such as natural disasters or power outages, the multi-AZ storage architecture can still provide stable and reliable storage services for customers.
Region
A region is a physical location where data centers are hosted on Tencent Cloud. COS data is stored in the buckets in these regions.