AURORA

Question 1

Aurora DIsk Recovery

Answer 1

Aurora is self Healing and does not require PIT recovery or Backup and restore.

Question 2

Aurora RR

Answer 2

Aurora can have up to 15 read replicas, and each replica is promoted into a write node in less than a second. Super fast failover

Question 3

Aurora storage Billing

Answer 3

Automatic, you dont get to select storage and billing type.

only uses SSD

Aurora Bills you for the Peak Transient of your storage. So even if you free up storage, you will still be billed for the Once Peak that you hit.
To save cost, create a new cluster
Storage which is freed up can be re-used(since it’s already being billed for)

Question 4

Aurora Storage Architecture for speed

Answer 4

Aurora Storage is attached to the Cluster and not the Instance, hence, Faiover and other node swapping is Super fast.

• Replicas can be added and removed without requiring storage provisioning.

Question 5

Aurora Reader/Writer Endpoint

Answer 5

Writer Endpoint is always pointed at the Primary Instance. Reader endpoint points at a RR and Load balanced across all RR

Question 6

Aurora Free Tier

Answer 6

NO FREE-TIER
It doesn’t use any of the Micro-Instances

Question 7

Aurora Backup Cost

Answer 7

Free and = to storage bought

Question 8

Aurora Restore

Answer 8

Aurora Restore creates a new Cluster(like RDS).

Question 9

Aurra Back-Track

Answer 9

Rollback-in-place. Works like system restore. Like Rewind

Question 10

Aurora Serverless

Answer 10

• Infrequently used applications
• New applications
• Variable workloads
• Unpredictable workloads
• Development and test databases
• Multi-tenant applications

Question 11

Aurora Global

Answer 11

Cross-Region DR and BC
* Global Read Scaling - low latency performance improvements
* ~1s or less replication between regions
* No impact on DB performance
* Secondary regions can have 16 replicas
* .. Can be promoted to R/W
* Currently MAX 5 secondary regions…