ACL can be applied to individual object within the bucket.Bucket Policies apply to all the objects stored within the bucket.Secure data using ACL and bucket policies.After all the parts of the object are uploaded, user will need to make a call to CompleteMultipartUpload operation to re-assemble the object.AWS recommends to use multi-part upload for objects larger than 100 MB and is required for objects larger than 5 GB. S3 support multi-part upload for large objects.Must be at least 3 characters and at the most 63 characters long.Bucket names cannot be formatted as IP addresses.Must start and end with lowercase letter or number.Bucket names can contain lowercase letters, numbers, and hyphens with each label separated by a hyphen.It is recommended that the bucket names comply with DNS naming standards.AWS will encrypt the object at rest with Server Side Encryption based on the value of x-amz-server-side-encryption header in the REST API request.SSE-KMS (Key Management Service managed Keys).If the object is updated after suspending the versioning, S3 will store the object with ‘null’ version id and replace the existing copy of the object in the bucket which has ‘null’ version id (if object was originally created with ‘null’ version id).If the existing object is updated after the versioning is enabled, old copy of the object will still have ‘null’ version id, however the updated object will be stored in the bucket with its own unique version number.When the object is updated using the PUT, POST, COPY command, it replaces the existing object with ‘null’ version id. S3 objects stored in the buckets without versioning enabled has ‘null’ version id.When an object is deleted, a delete marker is added to make the object invisible in the bucket. S3 allows retaining old versions of the object.Built for 99.99% availability and eleven 9’s of durability.Glacier – Least expensive for archiving the data, however could take some time to retrieve the data from archive.
Reduced redundancy Storage – 99.99% Availability and 99.99% durability.S3 Infrequently Accessed – Less frequently accessed data and cheaper than S3 offering 99.9% Availability and eleven 9’s durability.S3 – 99.99% Availability and eleven 9’s durability.S3 Object Creation (S3 Standard) –> S3 IA (min 30 days after creation) –> Glacier (min 60 days after object creation) –> Delete.Can be used along with versioning on both the current and old versions.Read after Write consistency for new objects – Reading new objects just after creating them in S3 would always be consistent with what was written into S3.Įventual Consistency for updating or deleting the objects – Reading objects just after updating or deleting them in S3 may or may not be consistent with what was updated into S3.
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