ASP NET Core on AWS Lambda | .NET ON AWS | AWS Serverless | Amazon

AWS Lambda is a compute service that lets you run code without provisioning or managing servers. You can combine Lambda Function with API Gateways or Function URLs to build API endpoints.
But what if you have existing APIs built using ASP NET Web API and want to use the AWS Lambda function. You might not want to go through all the work to migrate them over to independent Lambda functions and build the API from scratch.
In this video, I will show you how you can easily host ASP Net Web APIs on Lambda Functions. I will show how to expose ASP NET API using the Function URLs feature of AWS Lambda. We will also explore how we can integrate it directly with API Gateway as a REST API and also as an HTTP API.
00:00 Introduction
01:22 ASP.NET Core API
02:25 Minimal API endpoint
03:26 Enable Lambda Hosting
06:58 Testing Local Dev
07:11 Deploying into AWS Lambda
10:10 Enabling Function URL
11:35 Enable Swagger Endpoint
12:42 Deploy From Visual Studio
14:49 API Gateway - HTTP API
17:30 API Gateway - REST API
20:54 Conclusion
Additional Watching
📹Function URLs - • AWS Lambda - FUNCTION ...
📹AWS Lambda - • AWS LAMBDA For The .NE...
📹Lambda Udemy Course - bit.ly/aws-lambda-udemy
📹 AWS HTTP API - • Amazon API GATEWAY - H...
📹 AWS REST API - • Amazon API GATEWAY - I...
📹 ASP Series - bit.ly/asp-net-core-series
📹AWS Series - bit.ly/aws-net-series
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[@psyduk17]

Excellent, Thanks friend

[@Kspvilar]

Great Content as allways! Thank you.

[@RahulNath]

Glad you enjoyed it Knulp!

[@2784raj]

you are doing awesome work to help IT community, by making such a amainzing content thanks you so much!

[@RahulNath]

Thank you Raj! Glad you are liking the videos.

[@kebab-case]

Thank you very much, you are good at explaining!

[@RahulNath]

You are welcome! Hope you are enjoying the AWS Series bit.ly/aws-net-series

[@DguruZ]

Awesome tutorial sr. Thank you so much

[@RahulNath]

Glad you liked it! Hope you are liking the Series bit.ly/aws-net-series

[@TonoNamnum]

Very cool!

[@RahulNath]

Thank you Antonio! 😀

[@sivakumarr28]

If I found this video a year before, I can save lot of time. I host a webapi project in lambda a year ago..

[@RahulNath]

Yeah I am late with this guess 😂

[@0xfatherstreet]

Thank you

[@danieltoledo9603]

the best!

[@RahulNath]

So kind of you Daniel and glad you like it.

[@shortanimatedmovie672]

Anyone can help me with this error after this command {Enter Runtime: (The runtime environment for the Lambda function) dotnet8} : error : The NuGetSdkResolver did not resolve this SDK because there was no version specified in the project or global.json.

[@emilmuller4261]

Excellent as always!🎉 what about content files for front end?

[@hector9079]

Muy bueno

[@RahulNath]

Thank you hector!

[@vivekgowda1576]

Thank you for the video. What if we use a clean architect or large application, is this the best way to do it? Or can we create a lambda function for each API controller level? As per my understanding, Lambda should be light. if we deploy a complete solution as a single lambda fiction it will cause performance issues.

[@hassansiddique2936]

so we don't need to buy any hosting for webspi. is there any limitations to host on lamda?

[@shenanigans917]

You sir have earned a subscriber!!! Is there any possibility you could show how to add functionality within the REST API for something like a shopping cart application in the future?

[@RahulNath]

Glad you like the content. Can you provide more details on what you are looking to achieve. Hopefully I will do a video on that

[@bettyyuliani650]

what's the difference between connecting the lambda to api gateway to no connection? when it works without the api gateway that you introduced in the later part of the video?

[@RahulNath]

API Gateway provides more out of the box capabilities when building APIs. So if you want to use that while exposing on Lambda you can choose that option. There is a video on API Gateway in this series here bit.ly/aws-net-series. Let me know if that helps.

[@ajaychourasia5910]

Thank you so much for sharing. Can you please show how to create Function URL for any REST web api in the same project as you are showing in the video. Thanks!

[@RahulNath]

Hey Ajay Glad you like the video. I do have two other videos on Function URLs in this series bit.ly/aws-net-series Did you get a chance to see those? What trouble are you running into?

[@ajaychourasia5910]

@@RahulNath thank you for your reply. I watched your other video of URL and I followed the same steps and and made auth to NONE, even then my Function URL is returning 'Internal server error' where as if I am using the URL which I got in the Visual Studio after deployment is working perfectly fine, not sure where I am missing some thing. Thanks.

[@Mec2005]

Thanks for the content. I have an aspnet 6 webapi with many CRUDs, if I use lambda to host it, could I get error if call an endpoint that takes 2 minutes to do something (in a db transaction) but my lambda is ending, i.e, 15 minutes is the max time, after that he dies and my suppose transaction dies to. If I call my endpoint first time, the lambda will lives for 15 minutes (max that I cofigured) or it will die and for each calls it will starting again?

[@RahulNath]

Not sure if I fully understand the question, but maybing check out this post/video on Lambda Lifecycle might help you understand this better www.rahulpnath.com/blog/lambda-lifecycle-and-net/ If not can you explain your scenario in more details.

[@PrinceYadav-fn3cx]

Hi can you tell me how I can check implementation of inbuilt method is there any extensions available in visual studio?

[@RahulNath]

I have Resharper which helps with that. Not sure if there is a way out of the box with VS. Or I use Rider which also does a good job with it.

[@PrinceYadav-fn3cx]

@@RahulNath thank you..

[@pajohns]

Isn't the idea of lambda functions to keep the functions tiny where endpoints are split up into separate lambda functions? From what I understand of this video this lambda function is actually a monolithic application.

[@RahulNath]

It always doesn't have to be separate endpoints. You can have a domain aggregarte API in a single endpoint. Also boils down to how you want to scale the functions etc as well. I wouldn't recomment having the entire application on it - but yes that is also a possibliity and comes down to the use case. Hope that helps.

[@saifmohsen8312]

very good vid, thnx, but what about the database ? how can we host and connect it ?

[@RahulNath]

What database are you using? I would either use a cloud hosted on like DynamoDB, SQL on RDS etc or self host it. What are you trying to achieve?

[@user-qg6kv9nd1h]

I am Getting this Error please help! In particular it says IAM is not authorized to perform iam:ListRoles nor iam:ListPolicies.

[@RahulNath]

Looks like a permission issue Nishant. For whatever action you are trying to do on the AWS resource you need that permission. Not sure what exactly the code is doing in your case.

[@jj39065]

You are missing some important steps I guess. First I get Error retrieving configuration for function apixxxxxx Unable to get IAM security credentials from EC2 and second I dont get Publish to AWS even after the Lambda is added.

[@RahulNath]

Hey Julian, How are you running the application? In the demo I am running it on my local machine and not an EC2 instance. Not sure why you are getting the IAM security error related to EC2. Also do you have the AWS Toolkit setup and the local credentials set up? I talk about this here www.rahulpnath.com/blog/amazon-credentials-dotnet/