Database - Neptune

Question 1

What is Amazon Neptune?

Answer 1

Amazon Neptune is a fast, reliable, fully-managed graph database service that makes it easy to build and run applications that work with highly connected datasets.

Question 2

What popular graph query languages does Amazon Neptune support?

Answer 2

Amazon Neptune supports both the open source Apache TinkerPop Gremlin graph traversal language and the W3C standard Resource Description Framework’s (RDF) SPARQL query language.

Question 3

What types of graph query workloads are optimized to work with Amazon Neptune?

Answer 3

Amazon Neptune is designed to support graph applications that require high throughput and low latency graph queries. With support for up to 15 read replicas, Amazon Neptune can support 100,000s of queries per second.

Question 4

How does Neptune improve fault tolerance?

Answer 4

Amazon Neptune automatically divides your database volume into 10GB segments spread across many disks. Each 10GB chunk of your database volume is replicated six ways, across three Availability Zones. Can lose up to two copies with affecting the database.

Question 5

What type of replicas are supported?

Answer 5

supports up to 15 Read Replicas, which sync asynchronously with automated failover

Question 6

Is CRR available?

Answer 6

no

Question 7

How can I Improve on availability?

Answer 7

by adding replicas. Replicas can share the same underlying storage and be promoted to primary without data loss

Question 8

How long does failover occur?

Answer 8

within 30 seconds or if you are moving to Neptune 30 minutes

Question 9

Can I use Neptune in a VPC?

Answer 9

all Neptune DBs must be created in a VPC

Question 10

What type of encryption does Neptune support?

Answer 10

HTTPS for client connections; database encryption with KMS; data at rest of the storage

Question 11

Can encrypted Neptune instances be unencrypted?

Answer 11

no

Question 12

pricing?

Answer 12

based on DB instance hours, I/O requests, storage, and data transfers

Question 13

limitations?

Answer 13

DB snapshots to other accounts are not allowed

Question 14

Most common use cases?

Answer 14

social networking (processing user likes, follows), recommendation engine; identity graphs (link and update user profile data for ads, analytics)

Question 15

Is Neptune reliable?

Answer 15

six ways across 3 AZs. self-healing; automatic failover