Blob Storage

Storage solution for unstructured data

Requirements

Create a container: The users should be able to create containers in order to group blobs. For example, if an application wants to store user-specific data, it should be able to store blobs for different user accounts in different containers.
Put data: The blob store should allow users to upload blobs to the created containers.
Get data: The system should generate a URL for the uploaded blob, so that the user can access that blob later through this URL.
Delete data: The users should be able to delete a blob. If the user wants to keep the data for a specified period of time (retention time), our system should support this functionality.
List blobs: The user should be able to get a list of blobs inside a specific container.
Delete a container: The users should be able to delete a container and all the blobs inside it.
List containers: The system should allow the users to list all the containers under a specific account.

Availability: Our system should be highly available.
Durability: The data, once uploaded, shouldn’t be lost unless users explicitly delete that data.
Scalability: The system should be capable of handling billions of blobs.
Throughput: For transferring gigabytes of data, we should ensure a high data throughput.
Reliability: Since failures are a norm in distributed systems, our design should detect and recover from failures promptly.
Consistency: The system should be strongly consistent. Different users should see the same view of a blob.