Specifications and Limits

Last updated: 2019-08-12 10:18:58

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Category Specifications and Limits Description
QPS Limits 1200 QPS per root account. For higher QPS, see Request Rate and Performance Optimization
Bandwidth Limit COS does not limit upload and download bandwidth, and the speed of the upload and download depends on your local bandwidth.
Storage Class COS Standard Billing limits:
There is no limit imposed on the storage time and storage size.
For more information on COS standard billing, see Product Pricing
COS Infrequent Access Billing limits:
Storage time less than 30 days is calculated as 30 days.
Storage size less than 64 KB is calculated as 64 KB.
For more information on COS Infrequent Access billing, see Product Pricing
Archive Storage Billing limits:
Storage time less than 90 days is calculated as 90 days.
Storage size less than 64 KB is calculated as 64 KB.
For more information on Archive Storage billing, see Product Pricing
Bucket Limits 1. After the bucket has been created, the name and region cannot be modified.
2. The names of all buckets under the same user account are unique and cannot be changed.
3. Naming only supports lowercase letters, numbers [a-z, 0-9], dashes (-) and the combination of them with a length of 1-40 characters.
Number of buckets Up to 200 buckets per account (default)
Number of objects The number of objects is not limited per bucket.
Object Limit Object key length should be between 1 byte and 850 bytes.
Upload 1. The maximum size of an object that can be uploaded from the console is 512 GB.
2. The maximum size of an object that can be uploaded via API/SDK is 48.82 TB (50,000 GB)
API upload specifications:
a) Simple upload: max 5 GB.
b) Multipart upload: max 48.82 TB. Part size is 1 MB to 5 GB. The size of the last part can be less than 1 MB. Allowed number of parts is 1 to 10,000.
Replication 1. Regional/Cross-region object replication is supported.
2. Object replication in the same region is free of charge. Cross-region object replication incurs traffic charges. For more information, see Traffic Fee in Product Pricing.
3. API replication specifications:
a) Simple replication: max 5 GB.
b) Multipart replication is needed for sizes over 5 GB. The maximum size of an object that can be replicated is 48.82 TB.
Batch deletion Up to 1,000 objects can be deleted in batch via API/SDK.
Access policy Number of rules The sum of the number of object and bucket ACLs and the number of bucket policies is limited to 1,000 per account.
Lifecycle Number of rules Up to 1,000 rules can be created for a bucket.
Storage class transition COS Standard to COS Infrequent Access: 1 day at least
COS Standard/COS Infrequent Access to Archive Storage: 1 day at least
Expired object deletion Expired object deletion for COS Standard/COS Infrequent Access/Archive Storage: 1 day at least.
SDK type 12 languages: Andriod、C、C++、C#、Go、iOS、Java、JavaScript、Node.js、PHP、Python、Mini program SDK