S3

What is S3?

Simple Storage Service: Cloud storage service provided by AWS

Benefits of Using S3

(1) Scalability

• Can expand/contract storage scale without spending much time and effort

• Storage capacity can be infinitely expanded, and you only pay for what you use, making it very cost-effective

(2) Strong Durability

• Higher storage durability means lower possibility of losing stored files

• S3 guarantees 99.999999999% durability

(3) 99.99% Availability Guarantee

• Higher availability means longer time to normally use files stored in storage

• S3 is designed to guarantee 99.99% annual storage availability

(4) Various Storage Classes

• Different storage classes can be efficiently selected depending on the purpose of using the storage

• Two storage classes that S3 users typically choose most

  • S3 Standard

    • Good for general purpose use

    • Advantages: Fast access to data, fast processing speed for data access requests

    • Disadvantages: High data storage costs, so not an efficient choice for long-term data storage purposes

  • S3 Glacier

    • Good when using storage for long-term storage purposes

    • Advantages: Very low cost for storing data

    • Disadvantages: Slow speed for accessing stored data

(5) Static Website Hosting Available

• S3 provides buckets as space where users can deploy static websites. Upload static files to a storage space called a bucket and configure the bucket for static website hosting to deploy static websites

• Static Files

  • Refers to files created without server intervention

  • Conversely, when a client sends a request to the server, files created on the spot by the server according to the request are called 'dynamic files'

• Web Hosting

  • Service that rents out a space on a server

• Bucket

  • A basket that contains files stored in S3. Also called the top-level directory for storing files

  • All files stored in S3 must be stored inside a bucket, and unlimited amounts of files can be stored in a bucket

  • Each bucket has a name, and the bucket name must be unique in the region where the bucket belongs

  • Also, bucket policies can be created to modify other users' access permissions for that bucket

• Object

  • Files contained in buckets are called 'objects' in S3. This is because S3 stores data in key-value pair format when storing data in storage

  • Objects stored in S3 consist of files and metadata

    • File: Actual data is stored in the file's value, and the maximum size of data that can be stored as an S3 object value is 5TB

    • File key: Serves as an identifier that makes each object unique. Desired objects can be searched using the file key

    • Metadata is data containing information about the object such as creation date, size, and type, and is data that describes the object

    • All objects have unique URL addresses, and the URL address is in the form of http://[bucket name].S3.amazonaws.com/[object key], and desired data can also be accessed through the URL address