AWS Posts

Invalidating Paths on Your Amazon CloudFront Distributions Using AWS CLI

  • by Emre Yilmaz
  • Nov 29, 2019
  • AWS
Invalidating CloudFront Distributions Using AWS CLI

When you make changes on your content distributed via your Amazon CloudFront distribution, you have two options for them to be visible if they are cached: You will either wait for the cache to expire or you will invalidate them to serve the changes immediately. Of course, you cannot do anything about the cached content on your users’ browsers. But in your side, everything is under your control on AWS.

In this post, I will talk about how to invalidate some paths on your Amazon CloudFront distributions using AWS CLI along with some other commands that may be helpful in the process. ... read more

Using IAM Authentication to Access Amazon RDS MySQL Databases from Python AWS Lambda Functions

  • by Emre Yilmaz
  • Nov 27, 2019
  • AWS, Serverless, DevOps, Databases, Python
Amazon RDS Iam Authentication

Where do you keep your DB credentials in your AWS Lambda functions that you use to access your Amazon RDS databases? Hardcoded? No! Environment variables? Well, you might be using AWS Secrets Manager, right? It would be great! But did you know that you can also use the IAM role of your AWS Lambda function and its temporary credentials to do this?

Yes, there are different ways to manage your database credentials in your AWS Lambda functions. In this post, I will talk about one of the most secure methods, using IAM authentication of Amazon RDS, with an example of an AWS Lambda function developed in Python. I will use an Amazon RDS - MySQL DB instance, but IAM authentication is also supported on PostgreSQL DB instances as well. ... read more

Why Choose Amazon Aurora over Regular RDS

  • by Emre Yilmaz
  • Sep 24, 2019
  • AWS, Databases
Aurora vs Regular RDS

Amazon RDS is the managed relational database solution of AWS. You leave the setup and maintenance of your database to AWS, and focus on using it with the help of RDS. You can launch and maintain community edition MySQL, PostgreSQL databases as well as commercial Oracle and SQL Server databases on Amazon RDS. However, in a few years ago, AWS developed its own cloud native, enterprise level database engine called Amazon Aurora.

Aurora provides MySQL and PostgreSQL compatibility. In this post, I will discuss some of its unique features and why you should choose it instead of community edition MySQL and PostgreSQL databases.

Recently, Aurora also launched its serverless and multi-master versions and any of these features can alone be the reason to choose it. However, in this post, we will focus on single-master Aurora deployment and its advantages over RDS. ... read more

Building Angular Apps with AWS CodeBuild upon Bitbucket Pushes

  • by Emre Yilmaz
  • Jul 11, 2019
  • AWS, DevOps, Angular

If you use Bitbucket for your private Git repositories, you cannot use AWS CodePipeline to create a CI/CD pipeline. Because CodePipeline does not support Bitbucket as a source repository. However, if you still want to use AWS developer tools to automate your builds and deployments, you have an alternative. AWS CodeBuild supports Bitbucket integration as source allowing to trigger builds after push requests to a Bitbucket repository by publishing it as a webhook to it.

By the way, Angular is one of the most popular frontend frameworks and you can deploy your Angular projects in a serverless manner. So it can be reliable, scalable and cost-effective by design. You can build your code, upload to an Amazon S3 bucket and distribute it via Amazon CloudFront.

In this post, I will make an example of using a Bitbucket repository for your Angular projects and triggering builds on AWS CodeBuild after pushing your changes to it. Then your AWS CodeBuild project can build your Angular code and deploy it to an Amazon S3 bucket making it ready for distributing via CloudFront. ... read more

Creating a Serverless API Using SAM CLI and Ruby for AWS Lambda to Access Amazon RDS MySQL

  • by Emre Yilmaz
  • Jun 28, 2019
  • AWS, Serverless, Ruby, DevOps, Databases
Using Ruby for AWS Lambda and Creating a Serverless API to Access Amazon RDS MySQL

Having a Ruby on Rails background, I got excited to try Ruby to code my AWS Lambda functions when its support for AWS Lambda was announced at Re:Invent 2018. Finally, to try Ruby on AWS Lambda, I developed a simple API using AWS Serverless Application Model (SAM) to access an Amazon RDS MySQL database. I wanted to compare it with my experiences of doing this with Python and Node.js.

Although it may seem simple, installing mysql2 gem as a dependency proved itself to be challenging than others, because it has native extensions and depends on the environment you use bundler. As always, Docker simplifies our job by providing a similar environment that our AWS Lambda function runs inside.

In this post, I will make an introduction to AWS SAM CLI and using Ruby for AWS Lambda functions. Let’s begin! ... read more

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