Amazon S3

Amazon Simple Storage Service (S3) is an object storage service offering scalability, data availability, and security.

Key Concepts

Bucket: Container for objects
Object: Files stored in buckets
Key: Unique identifier for an object

Creating a Bucket

bash

# Create bucket
aws s3 mb s3://my-bucket-name

# List buckets
aws s3 ls

Working with Objects

bash

# Upload file
aws s3 cp file.txt s3://my-bucket/

# Download file
aws s3 cp s3://my-bucket/file.txt .

# Sync directory
aws s3 sync ./local-dir s3://my-bucket/prefix/

# List objects
aws s3 ls s3://my-bucket/

# Delete object
aws s3 rm s3://my-bucket/file.txt

Bucket Policy

json

{
  "Version": "2012-10-17",
  "Statement": [
    {
      "Effect": "Allow",
      "Principal": "*",
      "Action": "s3:GetObject",
      "Resource": "arn:aws:s3:::my-bucket/*"
    }
  ]
}