powertools-lambda-python VS aws-lambda-go

Also I suggest to have a look at AWS Lambda PowerTools, which simplifies adopting best practices with Lambda

Python is a natural fit for serverless development. It boasts a vast array of libraries, including Powertools for AWS and robust libraries for data engineers. Its versatility and excellent developer experience make it a top choice for serverless projects, offering a seamless and enjoyable development experience.

Read more: https://docs.powertools.aws.dev/lambda/python/latest/

Imagine a sample Python application returning "hello world" to simulate a successful call. Each call to the application is captured for billing purposes using EMF. Lambda Powertools is used to reduce the amount of code we need to write.

Below is an example of lambda handler code. It is using the highly recommended Powertools for AWS Lambda library to ensure best practices around tracing, logging, metrics, and more. The function gets passed an SNS topic and Slack webhook URL at creation time (via environment variables) to send notifications to. It parses the passed in event information to determine which hostname had it's status changed and what the new status is and sends out notifications.

It's worth noting that these improvements will also impact other libraries and frameworks that rely on Pydantic, such as FastAPI and AWS Lambda Powertools, which could deliver some transitive performance improvements to various projects that don't directly depend on Pydantic themselves.

I had the pleasure of writing and contributing the Parser utility to a fantastic project on Github called AWS Lambda Powertools. We have used this repository previously in the blog series (parts one to three) for logging, tracing and metrics.

We are going to add aws-lambda-powertools as poetry dependency we need. While this is available as Lambda Layer, we are going to use it as a installed dependency for this exercise.

I truly disliked type hints. Working with CDK started to change that for the better and then I discovered AWS Lambda Powertools. It combines multiple things I am passionate about so I became passionate about using the library and improving it. Lambda Powertools utilizes static typing for several of its main features (Parser, Event Sources and Typing).

You can follow this documentation and use the Lambda function template repo here.

The entire solution is built using Go - this includes the Lambda function (using aws-lambda-go library) as well as the complete solution deployment using AWS CDK.

Now, to work with Lambda using go, we have to change the code a little bit and use this official aws tool.

AWS Lambda GitHub Repository - The official GitHub repository for AWS Lambda. It includes examples, guides, and resources specifically for working with Lambda in Go.

You will be using the Go programming language for the business logic (thanks to aws-lambda-go library) as well as the infrastructure component (Go bindings for AWS CDK) to deploy the solution.

In this blog post, you will be using the aws-lambda-go library along with the AWS Go SDK v2 for an application that will process records from an Amazon SNS topic and store them in a DynamoDB table.

The Lambda function is written using the aws-lambda-go library and you will use the Infrastructure-Is-Code paradigm to deploy the solution with AWS CDK (thanks to the Go bindings for AWS CDK)

This blog post is for folks interested in learning how to use Golang and AWS Lambda to build a serverless solution. You will be using the aws-lambda-go library along with the AWS Go SDK v2 for an application that will process records from an Amazon Kinesis data stream and store them in a DynamoDB table. But that's not all! You will also use Go bindings for AWS CDK to implement "Infrastructure-as-code" for the entire solution and deploy it with the AWS CDK CLI.

Now that you have everything you need, let’s create a new project using Go modules for your function. For example, let’s name the module lambda-time. In a new, empty directory, initialize the Go module, and install the AWS Lambda for Go library: