In this post I’m going to explore how the new event filters in AWS Lambda can be used to implement the data model for a video streaming website in DynamoDB. I’ll explain why this feature makes your code simpler and allows you to save money in the process.
The CDK Book The CDK Book “A Comprehensive Guide to the AWS Cloud Development Kit” is a book by Sathyajith Bhat, Matthew Bonig, Matt Coulter, Thorsten Hoeger written end of 2021. Because the CDK itself is polyglott with jsii, the TypeScript examples are automatically translated in other languages. So the example CDK code used in the book is jsii generated, and there are samples for TypeScript, Python, Java and C#.
Comparing the development methodology of a monolithic program to a Serverless IAC application you will see that the power of DevOps lies in automating everything. I will show you a working example of a serverless CI pipeline with automated unit, integration and end2end test and test reports in CodeBuild. The full source is written GO, with references to Node.JS and python for the test parts.
This is a live Blog from the workshop “Cloud Driven Development” on https://devopenspace.de/. Forget a lot of what you know about classic full-stack development. Together, we’ll dive into cloud-driven software development and build a sample serverless application in AWS. This blog was build live during the workshop on November 2021. So it`s not a complete reference, just a few hints to test and deploy the infrastructure and the applications.
End of September 2021, AWS announced Graviton 2 powered Lambda Functions. The announcement post says “All Lambda runtimes built on top of Amazon Linux 2, including the custom runtime, are supported on Arm…”. Not all languages out of the box, for using GO as fast language on a fast Graviton processor, you have to use Docker based deployment. Here I show you a simple - CDK powered way to do that.
Concurrent access to the same items in DynamoDB can lead to consistency problems. In this post I explain why that is and introduce optimistic locking as a technique to combat this issue.
After describing the context of the test pyramid for Infrastructure as Code in part 1, and the Web Application in Part 2a - let`s apply that to some Lambda function.
With CDK you create Infrastructure as Code - IaC. You can automate the test for the IaC code. The three test tastes -Unit, Integration and Application- should work closely together. Here I show you how. It is like the three steps of coffee tasting: 1 smell, 2 Taste, 3 Feel.
