Blob Storage

Blob storage represents a storage without any filesystem and which is accessible over http(s)
Blob(Binary large object) which means any file
This is a storage system where we can store any file and access it over http(s)
AWS has launched Simple Storage Service which is Blob storage as a service.
Storage space in S3 can be considered unlimited, only restriction being individual file size cannot be greater than 5 TiB
Azure has Storage account in which it supports blobs, to be very specific it has 3 types of blobs
- Page Blob which represents the hard disk
- Block Blob which represents any file (individual file size cannot be greater than 4.7 TiB)
- Append Blob which represents log files
Blob Storage Usecases
- Static files on websites: This includes
  - images
  - music
  - videos
  - documents
  - downloadables
- Backups
- Logs
- Data Lakes
Design Considerations
- Durability
- Availability
Cost Considerations
- Stroage costs
- Access Costs
Archivals

AWS S3 (Simple Storage Service)

This is Blob as a service from AWS
This is first of kinds service when it launched
Data Organization:
- In S3 we can create buckets. Name of the bucket has to be unique across all aws accounts
- In Each Bucket we can organize data in
  - folders
  - object (file)
To fine tune performance, costing AWS S3 gives us storage classes
Watch classroom video to create s3 bucket
Generally if we want more durability and availability we need to make multiple copies of data which is referred as redundancy
S3 supports
- Encryption during transit
- Encryption at rest can be done with
  - default keys of your account
  - Specific keys of your choice

Create an S3 bucket with name of your choice
Ensure ACL is enabled
Block Public access is unchecked
Now upload
- one pdf file
- one mp3/mp4 file
- one txt file
- one png/jpeg file
Ensure you grant public-read access during upload or make public post upload to view from anywhere