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AWS SWF, Beanstalk, EMR, Cloudfomation revision before the CSA exam

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Quick revision on topics AWS SWF, Beanstalk, EMR, Cloudfomation before appearing AWS Certified Solutions Architect – Associate exam.

This article notes down a few important points about AWS (Amazon Web Services) SWF, Beanstalk, EMR, Cloudfomation. This can be helpful in last-minute revision before appearing for the AWS Certified Solutions Architect – Associate level certification exam.

This is forth part of AWS CSA revision series. Rest of the series listed below :

In this article we are checking out key points about SWF (Simple Work Flow), Beanstalk (App deployment Service), EMR (Elastic MAp Reduce), Cloudfomation (Infrastructure as code).

Recommended read : AWS CSA exam preparation guide

Lets get started :

SWF

  • Max simultaneous workflows executions 1,00,000
  • C++ is not supported in SWF
  • There are three actors :
    • activity workers
    • workflow starters
    • deciders
  • Each workflow runs in the domain which is a collection of tasks.
  • Workflows in different domains can not interact

Beanstalk

  • Scala, WebSphere is not available in Beanstalk
  • Its free service. You will be charged for resources it provisions for your application
  • Supported platforms :
    • Java
    • Ruby
    • Python
    • PHP
    • Node.js
    • .net
    • Go
    • Docker

Cloudfront

  • One AWS account can have 100 CF origin access identities at max.
  • Key pairs are only used for EC2 and CloudFront.
  • All CloudFront URL ends with cloudfront.net
  • Cloudfront origins can be S3 bucket, EC2, webserver in an on-premise datacenter
  • It can serve private content by S3 origin access identifiers, signed URLs, and signed cookies.
  • Limits :
    • Req per sec per distribution : 1,00,000
    • Transfer rate per distribution : 40 Gbps
    • Origins per distribution : 25
    • web distributions per account : 200

AWS Infra

  • Total availability zones currently are 42.
  • The total regions are 16.
  • First 3 services launched by AWS are SQS (2004), S3 (2006), EC2 (later in 2006)