Gallery

6. AWS Simple Storage Service (S3)

AWS S3

Storage Classes

Access and Access Policies in Amazon S3

Multipart Upload

Transfer Acceleration

Pre-signed URLs

S3 Versioning

Object Lifecycle Management

Explore

AWS S3

Buckets, Object and Sub-resources

Amazon S3 Buckets

Buckets Overview

Definition: Buckets are containers for storing objects in S3.

Characteristics:

Flat containers without inherent hierarchy.

Hierarchical structure can be mimicked using object key names (prefixes).

Create folders only via the AWS Management Console.

Cannot create nested buckets.

Default limit of 100 buckets per account.

Unlimited objects can be stored in buckets.

Ownership and names are non-transferable.

Bucket names cannot be changed once created.

Deleting a bucket makes its name available again.

Bucket names are globally unique and part of the bucket’s URL.

Bucket Naming Rules

Length: 3 to 63 characters.

Format: Must start and end with a lowercase letter or number.

Characters: Lowercase letters, numbers, hyphens.

Structure: Series of labels separated by periods.

Restrictions: Cannot be formatted as an IP address.

URL Format

Example: https://s3-eu-west-1.amazonaws.com/<bucketname>

Regional Specificity

Region-Specific: Buckets are specific to the region they are created in.

Data Residency: Objects do not leave the region unless moved or cross-region replication is enabled.

Performance Tips

For better performance and lower latency, create buckets closer to clients.

Bucket Operations

Backup: Can backup a bucket to another bucket in a different account.

Logging: Enable logging to track bucket access.

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Amazon S3 Objects

Object Overview

Definition: Objects are files stored in S3 buckets.

Identification:

Uniquely identified by a combination of service endpoint, bucket name, object key (name), and optionally, object version.

Object Permissions

Define permissions at upload or any time later using the AWS Management Console.

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Sub-resources

Bucket Sub-resources

Lifecycle: Define object lifecycle policies.

Website: Configure static website hosting.

Versioning: Manage multiple versions of objects.

Access Control Lists (ACLs): Define permissions for bucket access.

Bucket Policies: Control access to the bucket.

CORS: Cross Origin Resource Sharing settings.

Logging: Enable logging for bucket activities.

Object Sub-resources

ACLs: Define access permissions for objects.

Restore: Manage restoration of archived objects.

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