DEVELOPyo

EC2 Instance :

- Use a Golden AMI : Install your applications, OS dependencies etc. beforehand and launch your EC2 instance from the Golden AMI

- Bootstrap using User Data : For dynamic configuration, use User Data scripts

- Hybrid : mix Golden AMI and User Data (Elastic Beanstalk)

RDS Databases :

- Restore from a snapshot : the database will have schemas and data ready

EBS Volumes :

- Restore from a snapshot : the disk will already be formatted and have data

# Developer problems on AWS

- Managing infrastructure

- Deploying Code

- Configuring all the databases, load balancers, etc

- Scaling concerns

- Most web apps have the same architecture (ALB + ASG)

- All the developers wait is for their code to run

- Possibly, consistenly across different applications and environments

[ AWS ElasticBeanStalk ]

- ElasticBeanStalk is a developer centric view of deploying an application on AWS

- It uses all the component's we've seen before : EC2, ASG, ELB, RDS, etc...

- But it's all in one view that's easy to make sense of

- We still have full control over the configuration

- BeanStalk is free but you pay for the underlying instances

- Managed service

  -- Instance configuration/OS is handled by beanstalk

  -- Deployment strategy is configurable but performed by ElasticBeanStalk

- Just the application code is the responsibility of the developer

- Three architecture models :

  1) Single Instance deployment : good for dev

  2) LB+ASG : great for production or pre-production web applications

  3) ASG only : great for non-web apps in production (workers, etc..)

- ElasticBeanStalk has three components

  1) Application

  2) Application version : each deployment gets assigned a version

  3) Environment name (dev/test/prod..) : free naming

- You deploy application versions to environments and can promote application versions to the next environment

- Rollback feature to previous application version

- Full control over lifecycle of environments

Support for many platforms : Go, java, java with tomcat, node.js phpm python, ruby, single/multi container docker, preconfigured docker... (If not supported, you can write your custom platform)