Cloud storage systems + FAAS

Question 1

What are the 4 amazon storage types?

Answer 1

1.Amazon elastic block storage
2.Amazon EC2 instance storage
3.Amazon elastic file system
4.Amazon simple storage service (S3)

Question 2

What is CAP theorem?

Answer 2

It states that in a distributed system, Consistency, availability and partition tolerance cant be achieved together.

Question 3

What is more preferred to focus on in large scale distributed systems with respect to cap theorem?

Answer 3

since Partition tolerance is essential, storage solutions either focus on availability (AP) or consistency)

Question 4

What is FAAS?

Answer 4

Function as a service (serverless computing) provides event driven computing. Developers run and mange functions which are triggered by events or http requests. developers deploy the code without worrying about managing servers or any other underlying infrastructure.

Question 5

What are the advantages and disadvantages of FAAS?

Answer 5

Advantages:
1.no provisioning of server is needed
2.Automatic scaling
3.cost reduction since we dont pay for idle VMs

Disadvantages:
1.Limited security since the VMs are shared and we dont have control over the network
2.Not suited for heavy computation workloads.