Cloud Integrations

Question 1

asynchronous

Answer 1

event based

Means there is a queuing system involved

Question 2

three types of decoupling

Answer 2

1. SQS queue model
   * producers send to queue
   * consumers poll queue
2. SNS pub/sub model
3. Kinesis real-time data streaming

Question 3

SQS

Answer 3

Simple Queue Service

• oldest, fully managed
• high scale (10000/s) low latency (<10 ms)
• no limit to number of messages
• default retention (4 to 14 days)
• message deleted after read

Question 4

FIFO

Answer 4

first in, first out

• messages processed in order

Question 5

Kinesis

Answer 5

real-time big data streaming

• manage, process streaming data
• • Kinesis data streams
• • Kinesis data firehose (send to S3, redshift, etc.)
• • Kinesis data analytics (SQL)
• • Kinesis video streams (analytics or ML)

Question 6

SNS

Answer 6

simple notification service

• producers send messages to one topic
• subscribers listen for topic notifications
• each sub gets all the messages
• up to 12.5M subs per topic, 100k topics

Question 7

SNS subscribers

Answer 7

• SQS
• Lambda
• Kinesis data firehose
• emails
• SMS / mobile
• HTTP endpoints
• No message retention

Question 8

MQ

Answer 8

message queue

• SQS, SNS are proprietary
• managed message broker for RabbitMQ and ActiveMQ
• doesn’t scale as much as SNS/SQS
• requires multi-AZ with failover