Serverless Spring: Deploy serverless functions to any platform using Spring Cloud Function
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- Опубліковано 14 жов 2024
- In this tutorial, you will follow along with me as we create a serverless function in Spring Boot using Spring Cloud Function. This will allow you to use the same consistent programming model regardless of the platform you are deploying your serverless applications on. In this example, we will deploy our serverless function to AWS Lambda.
🔗Resources & Links mentioned in this video:
Serverless Spring Guide: tanzu.vmware.c...
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Short and quick with great information. Thank you .🎉
i was trying to run serverless application in AWS lambda but failing every time , but your tutorials work for me . thanks a lot
Thanks Dan, this was super informative and will be helpful on my next project.
Glad it was helpful!
Hey Dan, I don't see the purpose of adding Spring Web as a dependency for a serverless function. My understanding is that functions are supposed to be short-lived programs, so deploying something to AWS Lambda which listens for HTTP requests seems counter-intuitive to me.
Is Spring Web only needed for the internal Spring Cloud Function "magic" to happen?
Interesting - as is and the startup time is 3.6 sec's. Much faster than my previous experience running SpringBoot as a Lambda. Really battle to get it to 23 secs. But, that was with a lot of JPA and other Spring related configuration.
With Spring Native it is another story altogether - sub second startups!
Will be very interesting to test this with SpringBoot 3.0 optimization.
Thank you for the feedback. I will work on getting an example together using Spring Boot 3 and compiling this down to a native image. Normal execution times haven't been a huge issues, it's usually just the cold start time which again we can now greatly improve.
Great tuto. Thanks Dan!!
thx for all your contents, really concise and helpful
Very interesting, thanks Dan!
Thank you!
Really nice and easy to follow tutorial! Thank you for creating it!
This is really powerfull. I am going to play with serverless spring for sure.
Thanks Dan. I think AtomicInteger is bit misleading, considering the way how AWS scales out and kills lambda instances. Anyway, good video.
Really helpful. Thank you so much
09:31 Create Supplier Function
10:36 Create Consumer Function
11:34 Test function via HTTP
14:23 Deploying Spring Cloud functions
15:13 Add AWS dependency
17:09 Deploy Functions on AWS
18:33 Create function URL on AWS
This is an exceptional announcment.
Stil need the Dockerfile? or we'll say "look ma' no docker file!"?
You don't need a docker file to build a serverless function in Java. Currently you can just use the maven shade plugin to create an uber jar.
Thank you Dan!
Thank you for watching!
This was a really awesome video, cannot stress that enough. I have used what I learned here and made my own spring cloud/lambda implementation.
I am running into one problem though. My app deals with the client uploading a file and sending it to my spring backend. I was previously using MultipartFile in my spring boot app but now I am having trouble attempting this with the new spring cloud framework. Any chance you can do a video or a small example of how to do this?
Thanks!
Bro Can you share github Link?
Could you please also create a video on how to call the multiple functions through the API gateway? Also, where are we set the spring.cloud.function.definition in the API gateway to dynamically route to the function.
Thanks Dan. This is very interesting, but it looks like that it just support GET and POST methods. Is there a way to use it in a RESTful way supporting other HTTP verbs like PUT, PATCH and DELETE ?
Hi! I have the same question, could you answer me if you have it? Thanks a lot.
Dan my Man
Thanks Dan
Hi Dan, In relation to the deployment what would we need to change if we want the lambda to be accessible by another service (AWS) or through an AWS API Gateway. Am right in assuming the approach shown here works because of the spring-cloud-web that is included in the jar?
Very nice 👍👍
Thanks for creating such an awesome contant. Can you please make something serverless using jpa repository and using aws mysql.
Thank you
You're welcome
Thanks!
You bet!
Thanks for the tutorial. Unfortunately, after adding a db-functionality to this project (model-repository-service with spring-data-jpa + data in application.properties) in AWS Lambda I keep getting "Spring Boot Lambda Startup multiple times" error. No idea, what have i done wrong, because locally everything works just fine :(
Nicely done. Thanks Dan.
A little wrinkle, maybe be it is just me. I am getting "{"timestamp":"2023-10-03T03:26:30.174+00:00","status":405,"error":"Method Not Allowed","path":"/create"}"
Anyone had this error? Any remedy?
Thanks in advance.
you need to use POST or GET method
What if we want to pass path param/query param or body?
I'm not sure if you can but also not sure why you would want to? If you're sending data as part of post request you should be sending it via request body.
@@DanVega Ah you mean parsing the body as json right? That make sense
@@DanVega But what if we want to pass a query or path param for a GET transaction? How can we achieve that using Spring Cloud Functions.
@@sagarbhat3884 I ran into this problem too. I wasn't sure what to do but I just ended up changing my method to a POST and adding the path param as the body.
Mark: In 2024-01-31, no more "spring_cloud_function_definition", please use "spring.cloud.function.definition"
I tried to do the same thing as when you did here , but I got this exception: Class not found: org.springframework.cloud.function.adapter.aws.FunctionInvoker: java.lang.ClassNotFoundException
java.lang.ClassNotFoundException: org.springframework.cloud.function.adapter.aws.FunctionInvoker. Current classpath: file:/var/task/
I don't know how to fix it
Hi Dan, thanks for the video; it is very well done. I'm running into the issue with calling my lambda function, even though I have "spring.cloud.function.definition": "create" in my header. The logs show an NPE at org.springframework.cloud.function.adapter.aws.AWSLambdaUtils.generateMessage(AWSLambdaUtils.java:127)
Did you find any solution to this? Now, I am facing a similar issue