dotnet aws
How to setup dotNet aws lambda function locally
A .NET AWS Lambda function is a serverless application written using .NET (C#, F#, or VB.NET) that runs on AWS Lambda. Instead of running your application on your own server or virtual machine, AWS automatically runs your code whenever an event occurs.
What is AWS Lambda?
AWS Lambda is a serverless compute service.
- You write your code.
- Upload it to AWS.
- AWS automatically executes your code when an event happens.
- You don't manage servers, operating systems, or scaling.
Common AWS Services That Trigger Lambda
Many AWS services can invoke a Lambda function automatically:
| AWS Service | Trigger |
|---|---|
| Amazon S3 | File uploaded |
| API Gateway | HTTP request |
| Amazon DynamoDB | Table data changed |
| Amazon SQS | Message received |
| Amazon SNS | Notification sent |
| Amazon EventBridge | Scheduled event or event rule |
| Amazon CloudWatch | Alarm or scheduled task |
| Amazon Cognito | User signs in or registers |
Why Use .NET Lambda?
Benefits include:
- No server management.
- Automatic scaling.
- Pay only for execution time.
- High availability.
- Easy integration with many AWS services.
- You can use familiar .NET libraries and C#.
Advantages
- No servers to provision or maintain.
- Automatic scaling based on demand.
- Cost-effective for workloads that don't run continuously.
- Fast deployment.
- Supports multiple runtimes, including .NET.
Limitations
- Cold starts: If a function hasn't been used recently, the first invocation may take longer to start.
- Execution time limit: A single invocation has a maximum execution time (currently up to 15 minutes).
- Memory and storage limits: You choose a memory size, which also affects available CPU, and Lambda provides limited ephemeral storage.
Traditional ASP.NET vs .NET Lambda
| ASP.NET Core Web API | .NET AWS Lambda |
|---|---|
| Runs on a server or container | Runs on AWS Lambda |
| Server stays running | Runs only when invoked |
| You manage scaling (or use managed services) | AWS scales automatically |
| Pay for server uptime | Pay per request and execution time |
| Good for long-running web applications | Good for event-driven and serverless workloads |
Softwares Requires to setup lambda in locally
Install these softwares in u r local pc
- Visual Studio 2022
- .NET 8 SDK
- AWS CLI
- AWS Toolkit for Visual Studio (Recommended)
Required Extensions for VS Code
- C# Dev Kit
- C#
- AWS Toolkit
To install the Amazon lambda Test tool
dotnet tool install -g Amazon.Lambda.TestTool-8.0
Common dotnet lambda commands
| Command | Purpose |
|---|---|
| dotnet new list lambda | Show available Lambda CLI commands |
| dotnet new lambda.S3 | Creating a new lambda.S3 templates |
| dotnet tool list -g | to check that the aws tool kit installed or not |
| aws --version | To check the AWS Version |
dotnet lambda invoke-function | Invoke a Lambda function from the command line |
dotnet lambda list-functions | List Lambda functions in your AWS account |
dotnet lambda delete-function | Delete a Lambda function |
