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S3.md

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S3

Even though each bucket is created in a specific region, S3 names must be unique globally

S3's Object is consists of the following:

  • Key
  • Value
  • Version ID
  • Metadata
  • Subresources (Access Control Lists, Torrent)

Data consistency work for S3:

  • Read after Write consistency for PUTS of new Objects
  • Eventual Consistency for overwrite PUTS and DELETES

Features:

  • Tiered Storage Available
  • Lifecycle Management
  • Versioning
  • Encryption
  • MFA Delete
  • Access Control Lists and Bucket Policies
  • can create up to 100 buckets per count by default
  • object's size is from 0 bytes up to 5TB
  • upload object > 100MB => should use multipart upload
  • upload object > 5GB => must use multipart upload

S3 Storage Classes (tier)

  • S3 Standard (99.99% availability 99.999999999% durability )
  • S3 - IA (Infrequently Accessed) (99.9% availability 99.999999999% durability)
  • S3 One Zone - IA (99.5% availability 99.999999999% durability )
  • S3 - Intelligent choice of ideal tier
  • S3 Glacier (Minutes to hours) (99.99% availability 99.999999999% durability)
  • S3 Glacier Deep Archive (12 hours can acceptable) (99.99% availability 99.999999999% durability)

charged ways:

  • Storage
  • Requests
  • Storage Management Pricing (tier)
  • Data Transfer Pricing
  • Transfer Acceleration
  • Cross Region Replication Pricing

S3 LifeCycle Management can:

  • Automates moving your objects between the different storage tiers
  • Automates expiring or deleting your objects
  • can be used in conjunction with versioning
  • can be applied to current versions and previous versions

Cross Region Replication

  • Versioning must be enabled on both the source and destination buckets
  • Regions must be unique
  • Files in an existing bucket are not replicated automatically (only when add a new file that new file was automatically replicated)
  • All subsequent updated files will be replicated automatically
  • Delete markers are not replicated
  • Deleting individual versions or delete markers will not be replicated

S3 Transfer Acceleration

Instead of uploading directly to S3 bucket, user can use a distinct URL to upload directly to an edge location which will then transfer that file to S3.

S3 Transfer Acceleration

Access Point

  • Managing data access at scale for setups where S3 is used as a shared data set by different applications, teams and individuals
  • A single bucket can have hundreds of access points
  • You can create an access point for your S3 bucket that grants access for groups of users or applications for your data lake allowing separate management of each access point