I would like to know what are the advantages and disadvantages of
using AWS OpsWorks vs AWS Beanstalk and AWS CLoudFormation?
The answer is: it depends.
AWS OpsWorks and AWS Beanstalk are (I've been told) simply different
ways of managing your infrastructure, depending on how you think about it.
CloudFormation is simply a way of templatizing your infrastructure.
Personally, I'm more familiar with Elastic Beanstalk, but to each their
own. I prefer it because it can do deployments via Git. It is public
information that Elastic Beanstalk uses CloudFormation under the hood to
launch its environments.
For my projects, I use both in tandem. I use CloudFormation to construct
a custom-configured VPC environment, S3 buckets and DynamoDB tables that I
use for my app. Then I launch an Elastic Beanstalk environment inside of
the custom VPC which knows how to speak to the S3/DynamoDB resources.
I am interested in a system that can be auto scaled to handle any high
number of simultaneous web requests (From 1000 requests per minute to 10
million rpm.), including a database layer that can be auto scalable as
Under the hood, OpsWorks and Elastic Beanstalk use EC2 + CloudWatch +
Auto Scaling, which is capable of handling the loads you're talking about.
RDS provides support for scalable SQL-based databases.
Instead of having a separate instance for each app, Ideally I would
like to share some hardware resources efficiently. In the past I have used
mostly an EC2 instance + RDS + Cloudfront + S3
Depending on what you mean by "some hardware resources", you
can always launch standalone EC2 instances alongside OpsWorks or Elastic
Beanstalk environments. At present, Elastic Beanstalk supports one webapp
per environment. I don't recall what OpsWorks supports.
The stack system will host some high traffic ruby on rails apps that
we are migrating from Heroku, also some python/django apps and some PHP
apps as well.
All of this is fully supported by AWS. OpsWorks and Elastic Beanstalk
have optimized themselves for an array of development environments
(Ruby, Python and PHP are all on the list), while EC2 provides raw servers
where you can install anything you'd like.