Limits

Limit	Value
Size of one request (a single PUT, a POST upload, or one multipart part)	100 MB
Parts per multipart upload	10,000
Largest object (with multipart)	About 1 TB (10,000 parts of 100 MB)
Keys in one DeleteObjects request	1,000
Presigned URL lifetime	Up to 7 days
Bucket tags	50 per bucket
Bucket name	3-63 characters; lowercase letters, numbers, hyphens and dots; unique across DockHive
Request fees	None

Buckets per account

Plan	Buckets
Free Tier	10
Developer Plan	25
Pro Plan	100
Scale Plan	Custom

Storage and downloads per plan are on Pricing and allowances.

Large files and multipart uploads

Any single request can carry at most 100 MB, so upload files larger than 100 MB with multipart uploads. The AWS CLI and SDKs do this for you; just make sure their part size and multipart threshold are 100 MB or less. Their defaults are fine:

Tool	Default part size	Setting
AWS CLI	8 MB	multipart_threshold, multipart_chunksize in ~/.aws/config
boto3	8 MB	TransferConfig(multipart_threshold=..., multipart_chunksize=...)
AWS SDK for JavaScript (Upload)	5 MB	partSize
rclone	5 MB	--s3-chunk-size, --s3-upload-cutoff

A request bigger than 100 MB is refused before it reaches your bucket. Unfinished multipart uploads keep their parts (and count as storage) until they’re completed or aborted; add an AbortIncompleteMultipartUpload lifecycle rule to clean them up.

Bucket names

• 3 to 63 characters: lowercase letters, numbers, hyphens (-) and dots (.), starting and ending with a letter or number.
• Not formatted like an IP address, and some prefixes are reserved.
• Names are unique across all DockHive accounts; if a name is taken, pick another.
• A bucket’s name and region can’t be changed. To rename, create a new bucket and copy the files (aws s3 sync s3://old s3://new).
• A bucket must be empty before you delete it.